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New degaussing principle circuit

2014-11-25 12:28  
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New degaussing principle circuit
Because the voltage on capacitor C2605 can not mutation, this high level signal thorugh R2602 resistor first charges to C2605, because charging time constant is very big, the high level potential build at C2605 lags to the start time. Whenit isin starting process, capacitor finishes charging, VT2600 tube's base is inhigh level and breakover, relay RY2600 coil generates current access, its touching point is cut-off, degaussing circuit power source ( AC) accessis cut, thereby itfinishes the cut-off movement of degaussing circuit. diagram 3: TV new type degaussing circuit After shutdown, IC001's pin changes to low level, capacitor C2605discharges through VT2600's b-e junctions and IC001 internal concerning circuit, and the discharging time constant is also very high, so VT2600 tube changes to cutoff state after delay period of time, relay RY2600 again recovers to normal close state for degaussing next time.