This circuit for voltmeter has an output of 1 V for 100 uA having been suggested by American publication of 1969. The transistors are general purpose types.
This circuit produces sequential outputs for the activation of several appliances in a residence, thus...
Pressing and releasing S, the capacitor C1 charges and discharge slowly through the oscillator...
This circuit uses an operational that is not currently common. We found it in an old American...