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- Power Tips #80: Compensating for diode drop variations
- Good info on techniques to compensate semiconductor’s tempco, the info useful to me, Thanks.
- Circuit provides hiccup-current limiting
- Q2 (2N2907A) C-E terminals are reversed. Emitter pin should connects to Vcc whereas its Collector should connect to D1's anode.
- Circuit remotely adjusts PSU voltage
- LM10011 (64 steps) needs an additional microcontroller/DSP to work with, whereas this one (128 steps) can work manually or easily interface with any standard digital I/O with 3V~5V logic voltage. The former one relies on binary code to vary its VID whereas this one is designed to gradually change output with clock pulses. Both of them are current based tuning but this circuit can sink or source current whereas LM10011 can only source. Such capability is important during UVP and OVP tests. UUT’s output is in its nominal during neutral condition, it can then be tuned up or down from nominal while the test program is running.