Heart Monitor –Transmitter (CB25406E)

This circuit was found in a Radio Electronics magazine from November 1991. The circuit operates at 2.2 MHz and has a low impedance output.

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40 W Amplifier LM1875 (CB6985E)
The integrated circuit used in this Electronics Now amplifier is not very common today. However,...
AC Amplifier CA3080 (CB25132E)
This AC amplifier has a gain of 40 dB. It was found in the May 1988 issue of Radio Electronics magazine....
1.2 to 25 V x 3 A Variable Power Supply (CB1578E )
The source shown in the figure provides output voltages in the range of 1.2 to 25 V with currents up...