This circuit consists of a bass filter that can be used as a subwoofer in a sound system. The circuit is from a Radio Electronics from May 1988.
This circuit detects traffic problems on a miniature railway by triggering an alarm. The circuit was...
When establishing the voltage at the input of this regulator, the output voltage rises smoothly until...
This circuit was found in a Motorola documentation from 1975. Modern equivalent transistors such...