This circuit was found in RCA documentation from the 1960s. The circuit uses components from that time and can measure speeds up to 10,000 rpm.
With calibrated RV1 it is possible to find a zener diode voltage. The integrated circuit is 0 741...
This power supply was originally created for the CB16760E (Loudness System) but can be used in any...
This car turn signal circuit was found in the April 1969 issue of Radio Electronics magazine. The...