Television receiver picture tube protection circuit

Details Television receiver picture tube protection circuit Television receiver picture tube protection circuit

1979-02-22

1980-08-19

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 91, 315 30, 315411, 358 74, 358190, 358243, H02H 308

Patent

active

042187206

ABSTRACT:
A protection circuit for television receiver picture tubes and related components which includes a diode which is forward biased during normal operation to provide coupling of the tube control grid to ground or reference potential and which is reverse biased during operation at excessively large beam currents, the reverse biasing of the diode causing the beam current to flow through a large grid-cathode resistor thereby effectively limiting electron beam current.

REFERENCES:
patent: 3612756 (1971-10-01), Akatsu et al.
patent: 3619705 (1971-11-01), Waybright

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