4.02.2021 (20:06:12)
toman:
Sorry je to z app note.
Fail-Safe Operation
With the modulation scheme employed by the TL494 and the structure of the oscillator, the TL494
inherently turns off if either timing component fails. If timing resistor RT opens, no current is provided by the oscillator to charge CT. The addition of a bleeder resistor (see Figure 22) ensures the discharge of CT. With the CT input at ground, or if CT short circuits, both outputs are inhibited.
Vymenil som tie tlste tranzistory za nieco modernejsie s ovela nizsim Qg, takze by to malo zvladnut 50-100kHz, bude to lepsie alebo vyvstavaju ine problemy? Indukcnost zmeriam.