Why does horizontal output transistor keep blowing?
Other possible causes: Improper drive to horizontal output transistor (HOT). A weak drive might cause the HOT to turn on or (more likely) shut off too slowly (greatly increasing heat dissipation. Check driver and HOT base circuit components.
What is horizontal transistor?
The horizontal output transistor (HOT) is a switch. It provides a path for current to flow through the flyback’s primary winding and horizontal yoke as shown in Figure 2. The HOT is switched on and off by a signal applied to the base. Because the this is a power transistor, a current drive signal is needed.
What will happen if the horizontal deflection yoke is shorted?
A faulty deflection yoke can affect the geometry (size and shape) of the raster, result in insufficient high voltage and/or other auxiliary power problems, and blow various components in the low voltage power supply or elsewhere.
What is horizontal output transistor?
What is the working of 555 transistor?
The 555 IC works in free running mode with an adjustable frequency option. With variable frequency one can double check the working of transistor. The figure shows the circuit diagram of TRANSISTOR TESTER . In this circuit the timer function is to work as a square wave generator and to provide clock for the transistor.
What is the capacitor voltage of transistor tester circuit?
Capacitor 100μF, 0.01μF Here the transistor tester circuit using 555 timer works as a Astable Multivibrator circuit and produce square pulse output depends on the timing Resistor and timing Capacitor value.
How does a transistor tester work?
The figure shows the circuit diagram of TRANSISTOR TESTER . In this circuit the timer function is to work as a square wave generator and to provide clock for the transistor. This clock is connected to the transistor (transistor to be tested) base. The transistor is provided with a LED to drive.
How do you test the base emitter and collector of a transistor?
Testing When You Know the Base, Emitter and Collector Determine which leads are the base, emitter and collector. The leads are round or flat wires extending from the bottom of the transistor. Clamp the black probe to the base of the transistor. Touch the red probe to the emitter.