Running Lights with CD4017
The 555 Astable generates a clock for this circuit, an oscillator giving a square wave output at pin 3 which is counted by 4017 to give a running lights effect.Read More
Isolated Full-duplex Serial Interface
I would like to build Optoisolated RS232 interface. I’vesearched a little bit, and I came across your design: RS232 with Opto-Isolation However presented schematic is of poor quality – I’mRead More
Level Meter Circuits SPM-3 WG
Here are three circuits from the manual. The design is entirely on discrete devices like transistors, diodes and zeners. Studying these designs will reinforce your basics. It is easy toRead More
Single Chip dual power supply
message: Hello, I want to know the single IC which can provide Both + V and -V from a single +Vin supply.. I need this for my dual supply opamp.ReplyRead More
Winding Insulation Resistance Measurement
I am working in power plant. we have a problem on one of gas generator. the problem is that low winding insulation resistance of generator rotor. it read 800 kRead More
Power Oscillator Circuit Design
I am trying to find a circuit diagram for a long time, which will give me the o/p Characteristics as 12V, 0.5A & 4000 Hz (or variable frequency). Will youRead More
Voltage to Current Convertor using LM723
his Circuit converts a voltage control output from a Process Controller to be converted into a Current Control if the AC-Drive or Valve needs a Current Control Signal.. Significance ofRead More
Single Digit Voltmeter with LM311
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