We found this 6-tube amplifier in a 1947 publication. It is a Public Address amplifier with excellent performance using triodes on the output.
This traditional configuration with the 555 was obtained in an 80s Hands-On Electronics. The relay...
This two-transistor circuit is from a Radio Electronics magazine from April 1965. The transistors are...
This circuit was found in a 90s Hands On Electronics. The semiconductor component is a Triac of...