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R05-100B Output voltage range should be +40 to +120V but only +55V to +120V in practice

johnred

I have designed in the  R05-100BR05-100B with a 5K pot to adjust the amplitude of the output But even when the pot is turned to minimum I can get Vout to no less than 56V

Is there an error in the datasheet?  I notice that in the specification section the Output Voltage Adjustment Range is shown as either 55..135 or 95..210VDC.

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  • Hi John,

     

    As far as the output voltage range the  R05-100BR05-100B is 41 to 120V the RXX-150B parts are 92 to 200V so you should have the correct part As far as the output voltage range that you are seeing there could be a couple of issues

    1) are you measuring the output voltage with some load on the output? If not, you might want to use a 10K - 50Kohm resistor (2 watts) to load the output while you measure the output.

    2) the Pot you are using might not actually be reaching 0Ohm at the minimum range.  You could test this by removing the pot and shorting Vadj to Com and leaving Vref unconnected.

     

    I hope that this helps.

    Gene

Reply

  • Hi John,

     

    As far as the output voltage range the  R05-100BR05-100B is 41 to 120V the RXX-150B parts are 92 to 200V so you should have the correct part As far as the output voltage range that you are seeing there could be a couple of issues

    1) are you measuring the output voltage with some load on the output? If not, you might want to use a 10K - 50Kohm resistor (2 watts) to load the output while you measure the output.

    2) the Pot you are using might not actually be reaching 0Ohm at the minimum range.  You could test this by removing the pot and shorting Vadj to Com and leaving Vref unconnected.

     

    I hope that this helps.

    Gene

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