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Self Regulated Pulse Power Supply

IP.com Disclosure Number: IPCOM000093066D
Original Publication Date: 1967-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Smith, JA: AUTHOR

Abstract

In the circuit, large capacitor 1 is charged from a battery 3 of relatively low voltage. Lower power usage occurs because transistors 5 and 7 interact to result in lower power drain when capacitor 1 is fully charged.

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Self Regulated Pulse Power Supply

In the circuit, large capacitor 1 is charged from a battery 3 of relatively low voltage. Lower power usage occurs because transistors 5 and 7 interact to result in lower power drain when capacitor 1 is fully charged.

The source of power is battery 3 which produces a steady, five volt potential. Battery 3 connects to the emitter of transistor 5. The collector of transistor 5 connects to the emitter of transistor 7. Both transistors 5 and 7 are in circuit with the input of a step-up transformer 9. Both transistors are also in an oscillatory circuit including transformer 9, capacitor 11, and resistors 13 and 15. Capacitors 17 and 19 and diodes 21, 23, and 25 form a voltage tripling circuit with the output connected to capacitor 1.

When capacitor 1 is at maximum potential, a corresponding potential appears as a reverse voltage at the input of transformer 9.

This effectively resists all substantial further AC flow through the input coil of transformer 9. Then the collectors of transistors 5 and 7 may not conduct substantial AC and, therefore, no substantial oscillations occur. Resistors 13 and 15 resist large steady state currents. Capacitor 11 soon becomes charged to then prevent large steady state currents in transistors 5 and 7. Since there is some leakage from capacitor 1, the circuit continues to operate to maintain the charge on capacitor 1 at the required level. The large reduction in amount of current occurring after charging...