Found in an Electronic Design from the 90's, this circuit supplies voltages according to the indicated component values. The integrated circuit is from the time.
This optical switch was found in an old Texas Instruments opto-electronics manual. The relay is...
This op amp circuit is based on a 555 IC and two common op amps. Transistors are general purpose....
This Testa o Croce (name in Italian) was obtained from an Italian magazine in 1994. The circuit can...