Found in an old Popular Electronics this circuit can also be adapted to be used as a shield. In this version the control can trigger loads from the light that falls on an LDR.
From an input signal, and using an unusual current source, this circuit generates a ramp, that is, a...
This circuit doubles and reverses the polarity of voltage Ve which can be between 5 and 15 V. The...
Using an operational with FET this circuit presents excellent gain and does not need a symmetric power...