This circuit is from a 90s Radio Electronics. The resistors must be precision types and the transistor is a general-purpose type. The operational admits equivalent.
The integrated circuit used in this Electronics Now amplifier is not very common today. However,...
The idea of this 1982 Experimenters Handbook circuit is to generate an RF signal in L2 that can be...
This interesting circuit is suggested by National Semiconductor and is based on an LH0062...