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.
This capacitive switch or approximation relay was found in a 1980s US publication. Power should...
The circuit shown in the figure can be useful for readers who have an oscilloscope that does not...
We got this circuit in a publication of 1987. This is an audio limiter, a circuit that cuts peaks...