These optical relays, which can act as a shield, were found in an American documentation from the 1980s. The circuit has a LDR sensor. It can be adapted for other types of sensors.
Found in a 1980s documentation, this amplifier features high common mode rejection. The operating...
This circuit was found in a former Popular Electronics. The timing is set on the potentiometer and the...
With this voltage regulator we can build a source of 1.7 to 17 volts and a maximum current of 1.5 A. The...