This circuit was found in a Hands On Electronics from the 90s. The circuit does not need a symmetrical power source. The signals with which it operates are alternating.
August 2017 - TPS4H00EVM Power Module Modules for Texas Instruments High Power Positive Side...
E) This audio filter was found in the August 1993 issue of Radio Electronics magazine. It cuts low...
With the name of transitube we find this MW receiver in documentation from the 50's. It uses a...