This circuit is used in VHF and UHF superheterodyne receivers. The circuit is from the 1964 RCA transistors manual. Equivalent transistors such as the BF495 can be used.
The purpose of this circuit is to detect audio that amplitude modulates an RF carrier. The circuit is...
This crystal filter is normally used in receivers and the frequency depends on the crystal used...
We found this circuit in documentation from National Semiconductor. For the medium wave range the...