Horizontal Driver Transistor. One of the best example was the hp 17 7500 crt monitor. I came across lots of hot failure due to shorted primary winding in flyback transformer.
I came across lots of hot failure due to shorted primary winding in flyback transformer. This horizontal drive signal waveform comes from the horizontal vertical oscillator ic and to the base pin of horizontal output transistor hot after went through the horizontal driver transistor and the horizontal driver transformer. Nte255 silicon npn transistor horizontal driver amp absolute maximum ratings.
The hot is switched on and off by a signal applied to the base.
One of the best example was the hp 17 7500 crt monitor. It provides a path for current to flow through the flyback s primary winding and horizontal yoke as shown in figure 2. There are many reasons why the horizontal output transistor hot shorted in crt monitor. The horizontal output transistor hot is a switch.
