IRF9520 Tags - Electronic Circuit Diagram https://circuitdiagram.net/tag/irf9520 Schematic & PCB Design Mon, 30 May 2011 14:18:38 +0000 en-US hourly 1 https://i0.wp.com/circuitdiagram.net/wp-content/uploads/2016/10/cropped-ecd.jpg?fit=32%2C32&ssl=1 IRF9520 Tags - Electronic Circuit Diagram https://circuitdiagram.net/tag/irf9520 32 32 96547142 Safe Constant Current Source https://circuitdiagram.net/safe-constant-current-source.html https://circuitdiagram.net/safe-constant-current-source.html#respond Mon, 30 May 2011 14:18:33 +0000 http://circuitdiagram.net/?p=1011 In the above circuit diagram, a CMOS operational amplifier (op-amp) controls the current via a P-Channel HEXFET power transistor (IRF9520) to maintain a constant voltage across R1. The current is given by: 1 = VREF/R1. The benefits of this configuration are: Within the event of a component failure, the load current is restricted by R1… Read More »

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In the above circuit diagram, a CMOS operational amplifier (op-amp) controls the current via a P-Channel HEXFET power transistor (IRF9520) to maintain a constant voltage across R1. The current is given by: 1 = VREF/R1. The benefits of this configuration are:

  • Within the event of a component failure, the load current is restricted by R1
  • The overhead voltage required by the op-amplifier and also the HEXFET IRF9520 is very low.

The post Safe Constant Current Source appeared first on Electronic Circuit Diagram.

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