2018-11-20 07:40
This is small integrated amplifier at 20W using a TDA2004 or TDA2005 IC,use 12V supply for BCL car audio amps[...]
The post Build 20W Integrated Amplifier with tone control appeared first on… Read More
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amplifier
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zener diode voltage
cheap resistance decade
transistor
transformer
voltage regulator circuit
resistance decade circuit
Collection of electronics projects and simple electronic circuits as science projects, easy make with PCB, for beginners, hobbyist and student.
2018-11-20 00:48
To increase current transformer on the power supply. To save money with this idea, just only change connecting of on original transformer windings.
The post Multiples ways to increase curren… Read More
2018-11-17 17:01
This Simple Crystal oscillator Circuit using 74LS04 that provided square wave of 1MHz to 10MHz, Use inverter gate IC and control frequencies with crystal [...]
The post Simple Crystal oscill… Read More
2018-11-17 12:26
This is Simple video amplifier circuit using LM359. That use a op-amp IC number: LM395 or similar, which can work in high frequency such as LM3900 series [...]
The post Simple video amplifi… Read More
2018-11-14 03:07
Here is a DIY resistance decade tool for testing and calibration. Because it can substitute into a circuit with all standard value. This ideal is cheapest that use resistors and wi… Read More
2018-11-13 22:22
Small Zener diode voltage regulator circuit with PCB, using transistor and few parts. it is simple and cheap fixed dc source circuit. As one of best choice.
The post Small Zener diode vol… Read More
2018-11-06 22:14
Transistor Variable power supply 1A, 0-30V project with PCB. Using transistor boost current to 1A. No IC. No Zener diode. But steady voltage.
The post Transistor Variable power supply 1A, 0… Read More
2018-11-05 07:43
This is power battery saver circuit using an IC-555 timer. The lamp is controlled with a PWM mode by adjusting of potentiometer VR1. And, PNP power transistor drives a lamp. Sometimes a… Read More
2018-11-01 13:44
If you are looking for a power supply circuit. Here may be the choice you need. over 150+circuits with PCB and easy to build, low price for a beginner.
The post Top Power supply circuit diag… Read More
2018-10-31 15:49
This is High power siren circuit with small PCB size, using CD40106 and four transistor TIP31-TIP32 increase current to horn speaker 20W, 4-8ohm. , and
The post High power siren circuit usin… Read More
2018-10-30 08:26
IC 4017 CMOS-Decade counter/divider. When we build the 10 LEDs running light for hobby. Often use IC-4017. This really neat chip contains counter,decoder[...]
The post IC 4017/CD4017 Datashe… Read More
2018-10-27 15:36
High performance LM3914/LM3915 VU meter circuit projects that widely popular can display with 20 LEDs on stereo or mono with 10 LEDs for all audio system. [...]
The post VU meter circuit Ste… Read More
2018-10-27 14:55
These are many pre tone control circuit, use transistors as main. so low noise,good sound, cheap and easy to buy parts, you can builds with PCB layouts
The post High quality tone control cir… Read More
2018-10-23 04:44
This morse code generator circuit is suitable for learning basis of communication. Unbelievably, short and long tone can be decoded into letters and text.
The post Morse code generator circu… Read More
2018-10-18 14:53
If you need a dual power supply. But you only have a single supply source. So should build this power supply splitter circuit.
The post Power Supply Splitter circuit using op-amp appeared fi… Read More
2018-10-12 09:43
Here is cheap Stereo audio vu meter circuit with PCB. using KA2284 x2 and 10 LED or 5 LEDs per channel, it is simple to builds and few parts. put projects
The post Stereo audio vu meter circ… Read More
2018-10-08 05:16
SEE! Many Power amplifier circuit diagram with PCB layout. So easy to builds. You can choose 0.5W to 1,200W. Using transistors, MOSFET, IC on a lot types
The post 108+ Power amplifier cir… Read More
2018-10-02 07:04
This is Simple preamplifier circuit using transistors,low noise and easy to builds we have many circuit below, simple to difference projects [...]
The post Four Preamplifier circuits using… Read More
2018-09-29 03:59
Small appliances have microcomputer that requires 5V power supply. Why it can use only 1.5V battery? The 1.5V to 5V boost converter circuit inside them.
The post 1.5V to 5V boost converter… Read More
2018-09-28 17:49
Here is ic 555 inverter circuit. is easy and small size. Because use NE555 and MOSFET as main. When use source is 12V battery will have output of 100 watts.[...]
The post IC 555 inverter cir… Read More
2018-09-24 05:51
You cannot use fluorescent light bulbs with battery 6V, 12V. But 3 circuits of Fluorescent Driver help you, get ideas projects or learning.
The post Fluorescent driver with 6V, 12V | b… Read More
2018-09-18 08:02
LED VU meter using transistor is analog circuit to show level of power audio signal. You can build 5 LED to 20 LED display with PCB.
The post Analog VU Meter circuits using transistors, 5 to… Read More
2018-05-16 12:13
This is a Gel Cell battery charger circuit using LM317. It can charge any size of the Gel cell batteries at 300mA or 650mA or 1.3A. This circuit can extend the life of the Gel Cell battery… Read More
2018-05-04 07:42
In a normal circuit, the general LM350 regulator has a start voltage of 1.25V. But this circuit is special that start of 0-volts. We use only one IC and a few other components. So cheap and… Read More
2018-04-20 13:57
SEE! the 24V 2A power supply circuit for a 30w power amplifier or others circuits.
The post 24V 2A power supply circuit appeared first on Electronics Projects Circuits Read More
2018-04-18 13:41
This is a 4 transistor audio amplifier circuit. Which is a 4-transistors complementary push-pull amplifier, that shows the basics of audio amplifier design. This circuit saving on battery cu… Read More
2018-04-16 10:37
This is an Automatic water pump controller circuit diagram using an NE555 timer. In the countryside, water is very important. The most to use the groundwater to dig as a pond, and for the co… Read More
2018-03-30 14:46
Hight Bridge Amplifier using TDA2030
The post TDA2030 subwoofer amplifier circuit appeared first on Electronic Circuit, Projects & Learning Read More
2018-03-27 12:25
The old circuits is basic electronics that everyone need to learn!
The post Good Basic Electronic Learning site for KIDs by Colin Mitchell appeared first on Elec Circuit - Electronic Circuit… Read More
2018-03-10 16:02
Here are LED light sequencer circuit that using IC-4017 and IC-555.
The post LED light sequencer circuits appeared first on Elec Circuit - Electronic Circuit, Projects & Learning Read More
2018-03-03 09:40
This is simplest automatic solar led light circuit that my son try to make it for basic small solar charger. to use 2 x AA NI-MH battery total 2.4V
The post Simplest Automatic Solar Light fr… Read More
2018-02-05 11:45
Today, we recommend the most common linear electronic circuit symbols and diagrams. The Circuit-Symbols is very important in the circuit design or the circuit drawing. It is a pictogram that… Read More
2018-02-05 11:45
Most common linear electronic circuit symbols and diagrams are very important in the circuit design or the circuit drawing
The post Common Electronic Circuit symbols appeared first on Elect… Read More
2018-01-02 15:05
The Circuit of Main Amp BCL 6w With LM380 Today we come to see Bridge Amplifier very small-sized about 6Watt only. This work uses the integrated circuit number LM380 then build easy and econ… Read More
2017-11-17 18:19
Here is a low current 6 volts battery charger circuit. We applied them from cheapest a mobile phone charger. Inside is simple DC switching regulator circuit. This circuit we can apply many… Read More
2017-11-10 03:41
Cheap adjustable 0-30V 3A Laboratory DC Power Supply. high efficiency regulator circuit by IC regulator UA723-TIP3055 as power.Protect over load maximum 3A
The post 0-30V Variable Power Supp… Read More
2017-11-09 12:30
This regulator is 0-50v variable power supply circuit,3A that adjust output voltage 0V to 50 volts, and important is the overcurrent protection at 3 A.
The post 0-50v variable power supply… Read More
2017-11-02 22:21
When you make electronic projects that have to use the 5V,6V,9V,10V,12V at 1A regulated power supply regulated source. The first choice we recommend using the family IC-78xx. It is easy to u… Read More
2017-10-04 04:01
This is the Mini function generator circuit using ICL8038 IC-number. (Precision Waveform Generator/ Voltage Controlled Oscillator) It will generate output 3 the waveform, include Sine wave s… Read More
2017-09-16 03:21
it is the well-regulated power supply. We use it as the simple step down 12v to 9v converter circuit. It can give the output current up to 4A.
The post Simple step down 12v to 9v converter c… Read More
2017-09-05 04:56
This is LM317 voltage selector power supply projects can select output 1.5V,3V,4.5V,5V,6V,9V at 1.5A current. you can use as as battery, so saving.
The post LM317 Regulated Power Supply Vol… Read More
2017-08-31 01:47
These are many simple door buzzer circuit, use low voltage so safe. I am boring old buzzer. When use AC line, danger of leakage power in the heavy rain. ……. Have you ever had a… Read More
2017-08-26 10:03
This is Electronic Stethoscope circuits. Usually the stethoscope is a medical device that listens to the heartbeat. Which we can make it with the least amount of electronic equipment so eas… Read More
2017-08-23 10:30
My son wants to know more about MOSFET. I recommend trying to create simple Time Delay circuit using MOSFET,easy to make and long time and less parts than normal transistor. because working… Read More
2017-08-16 12:27
This is first mini emergency light of my son. It is very small, use LED display when power outage,use transistor instead relay use AA battery charger.
The post Mini emergency light circuit a… Read More
2017-08-16 12:27
This is first mini emergency light of my son. It is very small, use LED display when power outage,use transistor instead relay use AA battery charger.
The post Mini emergency light circuits… Read More
2017-08-15 06:33
The siren circuits are what importance in various alarm system. For example, the emergency alert, burglar alarm circuits, Fire alarm circuits, Timer , sensor controls, etc. Today I would lik… Read More
2017-08-13 16:20
This is simple signal injector circuit, used two transistors join together as astable multivibrator, signal output frequency 1,000Hz in square wave form.
The post Simple Signal injector circ… Read More
2017-08-11 04:53
I like Blinking 2 LED circuit using NPN transistors. We normally see it in a lot of circuit as oscillators and LED flahser.
The post Blinking 2 LED circuit using NPN transistors appeared fir… Read More
2017-08-08 14:42
Here is five burglar alarm circuits for you can look as idea To protect their property from thieves. simple switching, vibration systems, touch-sensitive.
The post 5 Burglar alarm circuits a… Read More
2017-08-06 11:23
This circuit be Basic Timer Circuit by use important equipment is FET 2N3819. By this circuit can can delay long ago arrive at 1.5 minute. Stand S1 at a position Reset an electric bell will… Read More
2017-07-27 10:51
The European police siren circuit is type of a siren. Which it is different from normal, is characteristics sound is high – low curtailed without like tone of voice common Siren. Which… Read More
2017-07-25 16:47
This mini emergency lighting are used to automatically give lighting when ac line power go out. Which they consist of one lamps, a battery, and a low voltage sensor. This projects design tak… Read More
2017-06-16 06:13
Here is The 4 Sound effects generator using UM3561 and a few parts only. It can make siren, Ambulance sirens, Police car sirens, Fire truck siren and Space
The post The 4 Sound effects gener… Read More
2017-06-09 12:30
This regulator is 0-50v variable power supply circuit,3A that adjust output voltage 0V to 50 volts, and important is the overcurrent protection at 3 A.
The post 0-50v variable power supply… Read More
2017-05-23 23:44
The switching regulator which used LM2575-5.0 in this page. You can make the stable voltage by using the 3 terminal regulator like LM317. However, because the output electric current and the… Read More
2017-05-20 22:20
This is Circuit Christmas Tree Lights Flasher with 7812 for supply regulator and IC LM380 for Signal generator dirve relay on-off the lamp two set. detail other see circuit. The Christmas Tr… Read More
2017-05-18 14:50
These are four light sensor alarm circuits, when be become dark, or Light sensitive switch.Use part is important light sensor LDR light dependent resistor
The post Four Light sensor alarm… Read More
2017-05-03 08:12
Here is LM350 Datasheet, LM350 Pinout and more. If you are looking for 3A adjustable power supply. We have many ways to make it.
The post LM350 Datasheet 3A adjustable Regulator appeared fi… Read More
2017-02-07 07:32
Sometimes we need a constant supply to the load.To prevent damage to the load.For example, when we apply a voltage that ever-changing to LEDs. However,LED… Read More
2017-02-05 07:30
This is IC 4060 Timer circuit. When rises time that is set, Suppose set 5 minutes time. after all time to 5 minutes. the circuit will emit a sound of buzzer once.
The post IC 4060 Timer pro… Read More
2017-01-29 08:03
This is timer circuit uses a 555 IC timer. it small,compact,portable. For the snooze alarm by buzzer when some 5 to 30 minutes. It make easy with pcb layout
The post 5-30 minuts timer circui… Read More
2017-01-18 04:21
This be mini size power amplifier 2 watt OTL that use IC LM380. Be base readymade circuit for side sound work and the communication. Which use outside equipment adds least. The C6 can choose… Read More
2016-12-24 11:48
Today we will make a 5 LED Running circuit can adjust speed by potentiometer. Which LED Chaser circuit like this We’ve created long time ago. But today we try to use arduino. We are wr… Read More
2016-11-24 12:48
Today we will as push button switch as toggle switch. When we press the button “on” it will store status “on” hold, although, we will release. Then, we press it again… Read More
2016-11-19 09:57
Today we will make a Adjustable LED flasher-first potentiometer using Arduino. It is first time that we use it. First to use potentiometer on Arduino Arduino has the analog input pin (A0 to… Read More
2016-11-16 07:24
Today we learn the simple simple Button Digital Input using Arduino it is very easy. The Arduino has Digital I/O PINs. Which “I/O” is Input and Output We used the output of Ardui… Read More
2016-11-11 17:42
This is the easy 3 LED running circuit or LED Chaser using Arduino. We will learn code “int” to define the variable. -variable Is representatives of the various Let’s write… Read More
2016-11-06 15:22
Today we will make a 2 LED flasher using Arduino (UNO) Usual we use a transistors circuit to make two LED flasher. This we will study programing C code on Arduino. It is easy to learn. Step… Read More
2016-10-31 04:47
Today, let’s do a one LED flasher. Which we use the Arduino Software (IDE). Although, difficult to use, because the text mode. But it works completed, the most popular and free. Step b… Read More
2016-10-06 08:52
Mechanical switches permit or interrupt the flow of current. They are also used to direct current to various points. The basic knife switch is the simplest switch. OPEN = OFF , Closed = ON… Read More
2016-09-25 07:42
My son draw circuits by a pencil, which is not beautiful at all as Figure 1. We found a way to draw a good and perfect EasyEDA.com, we can do circuit simulation, PCB design, Electronic circu… Read More
2016-09-15 11:01
I’ve bought a cheap digital frequency counter kits. It works great, can measure frequency up to 1GHZ in 19$ only. It use 8 the LED 7 segment display. But it’s a little brighter s… Read More
2016-09-03 19:27
I like taking the kids to tour upcountry. We purchased a GARMIN GPS to reduce stray. I like it because it can Map update any lifetime and cheap. But yesterday have a problem white screen wit… Read More
2016-08-20 04:08
Today, chayapol make a toy for younger sister. It is a Simple big robot toothbrush. The principle is very simple, It vibrates with movement, without direction and control. He took it to play… Read More
![4 LED Voltage Indicator Circuits-[Edit]](https://cdn.blogarama.com/images/posts_thumbs_site_id/1978/197788-2676782206.w320.jpg "4 LED Voltage Indicator Circuits-[Edit]")
2016-08-04 07:48
This is four circuits of LED voltage indicator are simple and easy to builds for check voltage battery and others, use as zener,transistor,LM339 and more
The post 4 LED voltage indicator cir… Read More
2016-07-23 08:38
My Friend need to like a Pulse Generator Oscillator circuit that stable frequency at 32.768KHz with watch crystal,for digital CMOS binary counter, so he tell to me even low prices. I think m… Read More
2016-07-05 04:02
Chayapol want to learning arudino microcontroller for making the robot. Now he like ubuntu os because it very fast and good no ads and no virus. He like to play minecrafe game on this os it… Read More
2016-06-17 12:30
We like to test the functionality of a high current power supply by simple power load. It is 12V lamp 50 watts. But it had a high temperature. Require a docking station proper on long time t… Read More
2016-05-21 01:22
Today we try to use CH340G Arduino Nano 3.0 on Mac OSX. In the beginning it was a problem. But it can be easy to fix. We liked it, because small, very cheap, and it can be exactly the same a… Read More
2016-05-14 01:04
Simple vibration and motion sensors can be made using a pendulum switch, mercury switch or one of many other methods. The Vibration Sensor Kit uses no moving parts to detect vibration. Inste… Read More
2016-05-03 01:18
This is DIY pocket pack solder. To portable and lightweight with the division lead to shorter. Normally we always to buy big lead because worthy than small. My son buy new solder; DIA: 0.8mm… Read More
2016-04-10 03:41
This is cheap adjustable 0-30V 3A Laboratory DC Power Supply circuit. It is high efficiency regulator circuit by using IC regulator UA723 and TIP3055 as power transistor so easy to install… Read More
2016-04-10 03:41
This is cheap adjustable 0-30V 3A Laboratory DC Power Supply circuit. It is high efficiency regulator circuit by using IC regulator UA723 and TIP3055 as power transistor so easy to install… Read More
2016-03-23 09:40
This is simplest automatic solar led light circuit that my son try to make it for basic small solar charger. This circuit is a simplest circuit. He trial it to learn about solar LED light, a… Read More
2016-03-23 09:40
This is simplest automatic solar led light circuit that my son try to make it for basic small solar charger. This circuit is a simplest circuit. He trial it to learn about solar LED light, a… Read More
2016-03-18 04:29
This is simple hight power LED flashlight,we use 24 LEDs super bright for display and 3 AA batteries and resistor for limit current so cheaper. Chayapol buy this LED flashlight but is low li… Read More
2016-03-18 04:29
This is simple hight power LED flashlight,we use 24 LEDs super bright for display and 3 AA batteries and resistor for limit current so cheaper. Chayapol buy this LED flashlight but is low li… Read More
2016-03-09 15:13
This is a simple Solar plant watering alarm circuit. It will sound alarms when the soil is dry. The trees have died. It the solar sell is 6V DC power supply. Thus saving convenience and does… Read More
2016-03-09 15:13
This is a simple Solar plant watering alarm circuit. It will sound alarms when the soil is dry. The trees have died. It the solar sell is 6V DC power supply. Thus saving convenience and does… Read More
2016-03-05 08:39
This is a fast blinking LED bike light circuit For safety when the bike at night. We use two-NPN-PNP transistor oscillator circuit and RC circuit only show on 4 LEDs use low current. We take… Read More
2016-02-28 05:37
Many friends suggested that my son should learn to use Arduino micro controller before. So it is First Arduino UNO R3 Board R3 leaning Board of Chayapol. The Arduino is the concept character… Read More
2016-02-24 04:12
This is a second study English that my son use learn it by the electronic components. Today we will know three words below. 1. Different Q: Is the resistors different the capacitor? A: Yes… Read More
2016-02-21 07:40
This is small integrated amplifier at 20W using a TDA2004 or TDA2005 IC,use 12V supply for BCL car audio amps
The post 20watt Integrated Amplifier by TDA2005 appeared first on Electronic pro… Read More
2016-02-09 03:33
Today, Chayapol experiment on the simple series circuit. To understand current flow and voltage across all devices in circuit. Parts he will needs 1. R2____1K 0.25 watts resistors 2. R1____1… Read More
2016-02-01 10:55
This is DC boost converter circuit that can use 3.3V to 5V power supply source into DC 12V-13.8V output max current 100mA. It is switching circuit better than old circuit. You can increase l… Read More
2016-01-18 07:36
This is a simple temperature to voltage converter circuit or an Electronic thermometer circuit there. Which will operate in a temperature range of 0 to 24 degrees Celsius (32 to 75 degrees F… Read More
2016-01-17 03:20
Chayapol like Electronics but do not like English is not the primary language of us. I had the idea to teach him, to start learning English with Electronic components as Figure below. 1. Tra… Read More
2016-01-14 04:53
Today Chayapol want to build the simple automatic flasher circuit. It is special that it will be light on dark. This circuit use 5 parts only and cheap. He like to play LEGO very much so bui… Read More
2016-01-12 23:27
This is first tiny emergency light of Chayapol. It is very small, use LED display when power outage,use transistor instead relay use AA battery charger. How it works As Figure 1; Tiny emerge… Read More
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