? ?
Thanks Raj but I can not adjust the 50 mA at rest, something is wrong yes!? ? Jorge
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Jorge,
This is normal. As the final IRF warms up the current increases. Do not
worry!
At 04-01-2017, you wrote:
?
?? ?? Hello Raj, my BITX20 V3
Linear is consuming 155mA I think a lot, what will be happening? Maybe
the auto FET flickering?
?? ?? ? Jorge PY2PVT _._
2017-01-04 10:11 GMT-02:00 Raj
vu2zap@... [BITX20]
<BITX20@...
>:
- ??
- For anyone trouble shooting the final stages.
- Measured these voltages without any modulation
- Power supply exact 12V, PTT pressed/shorted
- Predriver Q13 drawing 30mA
- C=11.6
- B=3.66
- E=3.0
- Driver Q14 drawing 41mA
- C=11.85
- B=1.0
- E=0.415
- Final Q15 drawing 150mA
- C=12
- G=4V
- E=0
--
?? 73 de Jorge PY2PVT
?? Campinas SP
?? GG67MD
--
? 73 de Jorge PY2PVT
? Campinas SP
? GG67MD