This circuit makes use of an operational amplifier from the 80's. The circuit can be implemented with modern transconductance operational and TTL logic working as a shield.
The circuit shown in the figure allows a pressure switch to be used to turn a load on and off in a...
This circuit powers a small 5 W lamp that goes out when power is lost. The circuit can use the...
This circuit locks after a short touch on the sensor. The circuit can be powered by voltages from 5...