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Transistor amplifier for a portable radio - or magnetic tape device with selection have operation in the device either from a built-in battery smaller capacitor or capacitance or of one of the device independent of the voltage source large capacitor or capacitance haen
Transistor amplifier for a portable radio - or magnetic tape device with selection have operation in the device either from a built-in battery smaller capacitor or capacitance or of one of the device independent of the voltage source large capacitor or capacitance haen