This low noise microphone preamplifier circuit was found in American documentation from the 90s. The circuit requires special care with the layout. The power can be between 9 and 18 V.
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...