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The additional resistor dampens this oscillation. Seeing that your circuit has no feedback resistor anywhere on the 2SC, I would suggest to try adding a 10R resistor in the base of the 2SC resp BC after the 22R resistor that goes to the feedback path and see whether that improves the situation. If not, you have to take out a good oscilloscope and look at the waveforms. Base current is not a problem, it is limited by R to 4.
I have short-term access to another C – putting that in the circuit works just fine, so I know the transistor is the issue. Is it possible that there is another problem which caused your transistor to fail and which makes your new transistor hot? Attila Kinali 1, 1 9. There are huge differences: So, transistor could overheat by high Vce or Ic. This is being used in a flyback circuit, which switches at approx ummm kHz or so.
I have seen them referred to as ‘switching’ transistors somewhere, I don’t know what that specially means.
2SC Datasheet PDF –
So, is there something ‘special’ about the C trannies? Well, it’s whether excessive base current, 2sc200 excessive product of Ic x Vce. This would severely limit the lifetime of an already stressed component. It is off the chart, it is a bad sign for this situation.
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2SC datasheet & applicatoin notes – Datasheet Archive
Post as a guest Name. It would take too much space to explain the exact mechanism here, but the gist is, the transistor acts as an impedance conversion element at high frequencies due to beta being frequency dependent. Home Questions Datashewt Users Unanswered. Hi, Attila, thanks so much for prompt reply.
2SC2001 Datasheet PDF
Adding schematic to show what I mean: This is from 2SC datasheet: Vce would be much higher than 1. But it will be lower, say it is mA.
What type of voltage booster circuit is this? The switching transistor shouldn’t go into breakdown.