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LM723 Negative Voltage Regulator - Higher currents, + Current Limiting?
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Topic: LM723 Negative Voltage Regulator - Higher currents, + Current Limiting? (Read 5397 times)
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fivefish
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LM723 Negative Voltage Regulator - Higher currents, + Current Limiting?
«
on:
August 02, 2015, 11:45:02 am »
I'm trying out a 723 negative voltage regulator circuit for 1st time.
The Positive voltage regulator in datasheet shows how to set current limit.
But for their negative voltage regulator (Fig. 18), there is no provision.
How do you set current limit value in a negative regulator schematic?
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SeanB
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Re: LM723 Negative Voltage Regulator - Higher currents, + Current Limiting?
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August 02, 2015, 12:08:33 pm »
Add an external PNP transistor to operate to steal base current, just like the NPN version does. Connected between base of the pass device and emitter, like the positive version, with a sense resistor.
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