This amplified metronome was found in a 90s Popular Electronics. The circuit is powered by a 9 V battery but will also work with 6 V of 4 standard batteries.
The idea of this automation can be extended to other applications that involve the control of...
This sophisticated transmitter was found in the June 1993 issue of Electronics Now magazine. The...
March 2017 - Texas Instruments LM5166 Synchronized Buck Converters are available at Mouser for 3V...