We found this small audio amplifier in the November 1999 issue of Electronics Now magazine. The integrated circuit used is not very common today.
This 1 to 40 MHz amplifier is from a 1969 Motorola documentation. The components are of the time...
This ultra-low power circuit makes the LED flash. The circuit is powered by 15 V in this...
This circuit was found in a 1968 General Electric manual. The circuit is for 3 A motors but can be...