1 W amplifier (CB8948E)

This circuit was obtained in a 90s American documentation. The integrated circuit used is uncommon today. The circuit has a low RFI level.

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LM3914 Moving Point Voltmeter (CB25450S)
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5 W Class Amplifier (CB13674E)
This unusual audio amplifier configuration was obtained in a 1974 documentation. The PNP...