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Page2 to the right side, or shown at the attachment.
Here R16, Q4, D6 form a constant current feeding C12, once C12 voltage reaches a threshold of 1.2V, it discharges through a 30ohm resistor inside that IC, so that a constant off-time is programmed.
(when switch is...
Hi:
The company was integrating a controller into a lamp fixture. The controller is FCC approved for EMC performance by testing individually. The fixture include a lamp, the controller and a wiring box, and the whole fixture failed the FCC conduction test.
We had to put a metal box...
no load loss
I designed a non-power factor corrected flyback type charger before, works fine, about 80% efficiency, 90-240VAC in, 24VDC, 2.5A out. 0.8W no-load loss.
Recently I added a PFC boost stage in the front of the flyback converter with the same transformer, the new charger works fine...
Sorry to bother you:
I just have problems when building a low-pass filter, the input signals are a 100 Hz 10V signal and a 5V 100k Hz one, they are combined at the input. I just need the 100 Hz signal at the output to turn on a microcontroller, (which I believe is low impedance). My...
Sorry to bother, that's a question I met in the company and nobody can answer it, I guess maybe sb. here can help me.
We are working on an inductive charging board. The primary and secondary board are only communicating via two coupled inductors.
The mainvoltage going from primary winding to...
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