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Priority claimed from BE2/59840Aexternal-prioritypatent/BE894437A/en
Application filed by Int Standard Electric CorpfiledCriticalInt Standard Electric Corp
Publication of PT77362ApublicationCriticalpatent/PT77362A/en
Publication of PT77362BpublicationCriticalpatent/PT77362B/en
The class B balanced type amplifier uses discrete NPN and PNP transistors. The voltage difference between the output terminal and the positive supply rail is monitored and, provided, that is stays under a present limit, the current supplied by the amplifier is not affected by the protection circuit. If the voltage is greater than that needed to cause a Zener diode in the protection circuit to conduct, the current delivered is reduced linearly to maintain a constant output power. The amplifier is also protected against damage from external voltages greater than the rail potentials by reverse-biased diodes between the output and the amplifier supply rails. int.
PT7736283A1982-09-201983-09-20Electronic power overload protection circuit
PT77362B
(en)