We found this circuit in an Electronics Now magazine from June 1995. The transformer has a primary according to the network and a secondary of 6 to 9 V with 100 mA.
This indicator or VU meter for stereo amplifiers was found in a 90s Radio Electronics. The...
This interesting circuit from 1967 documentation uses three series lamps to regulate the voltage...
This circuit causes an instrument needle to oscillate to signal an event. The circuit is powered by...