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
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
Using this circuit on Printer Port, one could drive 256 Relays or 16K LEDs as Dot Matrix display. It can be used to drive a Large size multiplexed LED dotRead More
This was done in my early days, i have upgraded it, it ought to work, reduce the number of transistors to make it less sensitive, also a lower value inRead More
Continuation of Digital Interface Discussion, only my part of the communication here. This will help you understand some common methods and issues.Read More
Here i am listing the last few parts in this Interface discussion. Only Points to remember are listed. Resistors attenuate voltage or reduce. Current flow has to be limited. TheRead More
Only my Messages are combined here to create paragraphs. Related to Interfacing an Embedded System to external circuits. Pull up means a resistor connected from a point to +V. PullRead More
After a long time a thread of discussion. It is about digital interfacing of embedded system. Only Education Points listed. Initials and country of origin also will not be mentionedRead More
This circuit is a standard way of driving Small Power Relays from Control Signals generated by Logic or Opamp Circuits. C2 and R5 form a snubber which improves the lifeRead More