Archer Project Board Power Supply
2022-01-27
This board provides 5 volt or 13.8 volt power. may be built up as a 5 v/13.8 v dual power supply. This board has LM317 and make a nice LaboratoryRead More
Single Digit Voltmeter with LM311
2021-07-09
I wanted to design a logic probe as a tutorial, but there were many good ones in the web so i have tried to design a single digit voltmeter. ThisRead More
Millivolt Meter using a LM3914 LED Dot Display
2020-05-01
Here is a easy to read ‘Analog’ Millivoltmeter. Just like the Moving Coil Voltmeter, but does not have that resolution. This gives a easy indication of process progress or parameterRead More
Continuity Tester
2017-07-20
Question – i want a continuity tester circuit or get one. mail by RB Here are some pages that might help Simple Component and Continuity Tester – This simple project may beRead More
PLL using 4046 – Phase Locked Loop
2016-10-19
CD4046 is a PLL or phase lock loop, it mainly consists of a VCO and phase comparators. This is a component in FM demodulation and modulation. Mixed and Interface CircuitsRead More
Hobby Diy Oscilloscope
2016-06-24
Is it good as a (beginner) hobbyist to crave for an oscilloscope. mail from EA This scope will work from your PC Audio Card or Sound Card. You First need toRead More
LM3914 meter for 25 V DC
2016-06-01
“I wish to assemble a bargraph display to indicate approximately 25volts dc.How many LM3914 I should cascade? How to calculate resistor value which is grounded from the junction of PinRead More
ICL7129 AD Converter needs Triplexed LCD
2016-04-14
I’m using the ICL7129ACPL to construct a simple 4-1/2 digit DVM. I looked over the application notes on FE LCDs on a similar post and noticed that it listed theRead More
