This circuit makes use of a 741 single source operational amplifier to measure resistors on a linear scale. The circuit may use as an indicator a common multimeter on a low current range.
This circuit makes a very fast switch when receiving an input signal. The FET can be BF245 and the...
The circuit presented was suggested by National Semiconductor in its Linear Applications Handbook. The...
This circuit uses one UJT (Unijunction Transistor) to produce three different tones in a...