We found this circuit in a 1998 documentation. It tests common household appliances to see if they are shorted by lighting an incandescent lamp.
The frequency of this circuit can be varied from zero. The circuit uses the CMOS 4046 and was...
This audio amplifier circuit is from Ibrape's technical documentation from the 70's. The BC177 can be...
This simple circuit has three electrodes that indicate the level using mercury in a small...