Schematics of delabs

In this circuit we tackle the error indicated in the earlier Current Source. The LM336-2.5V eliminates the tiny error of the regulated supply and resistors. Thereby increasing Precision to a higher degree. The opamp mirrors the stable 2.5V across P3 +… more »

This is a LED Analog Meter, This can be used as a Resistance Meter and Low Impedance Voltmeter for Battery Levels. Resistance measurement Current Source To measure battery voltage, the R5-R12-R17 etc. part of the Reference Resistor Divider Network can… more »

I had to once interface an high voltage circuit to PC, The uC had to communicate thru RS232--Comm port--Serial Port. Part of the 80C31 8051 SBC Even though i had isolation at the sensors and actuators to make doubly sure the PC also has been isolated.… more »