Found in the September 1992 issue of Radio Electronics magazine. This circuit generates pulses that are determined by C3. The circuit has output pulse intensity and timing adjusted by R6.
If you have a common analog multimeter, you can increase its input resistance in the measurement of...
This circuit was found in a 1980s documentation. Q1 and Q2 can be BC548 and SCR a TIC106. The...
This circuit has a logarithmic response as a function of the light falling on the sensor. The...