- A Sense of High Voltage Control
- It is believed that by sampling the voltage across a bleeder resistor can gain a sense voltage from the high voltage generator. The sense voltage is then occupied to a high voltage control circuit or is applied to confine beam current (ABL) to correct for raster breathing via an E-W correction circuit. Despite, variation in the sense voltage is ratable to the beam current, but not to the high voltage. This contributes to poor raster breathing correction because the non-linearity of the high voltage is not explained by the E-W correction circuit, which is linear, or the high voltage control circuit. This produces incorrect aftermath in high voltage regulation or E-W correction since the stowage of the center and G2 electrodes are still beam current reliant. Another demerit to using the bleeder resistor is that blemish to the picture tube may result is there is a poor joint between the bleeder resistor and the high voltage circuit. The second independent bleeder resistor may be used, specifically to sample only the high voltage. However, this method is costly and use off too much power.
Products
