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Old 29th March 2013, 03:43 PM   #1
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Join Date: Feb 2013
Default BIPS1 modification, resistor elimination

To reconfigure BIPS module for the 12v supply, how do I safely remove the resistors? If desoldered do they then need to be bypassed with a segment of wire?

The SMPS500R I have is configured with output voltage of +\- 60v, could I leave the BIPS in the default configuration and power BIPS from the 60v output?
Are the resistors already the correct value to cut 60v to nominal operating voltage for BIPS?

Last edited by AmpedOut; 3rd April 2013 at 09:34 PM. Reason: Dead thread
Old 7th April 2013, 02:25 AM   #2
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Join Date: Feb 2013
The resistors on my BIPS are 4 band green-blue-black-gold. That means I've got 56r resistors for 12 volt supply, and it matches up to the smps500r aux output.
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Post 729 had the key fact about the resistor value.
Old 7th April 2013, 05:26 AM   #3
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If the BIPS is supplied with +-12V to +-15V the 56R resistors which are default used on the board are the suitable ones to be used. but if is supplied at +-60V like in TA3020v4b application, the resistos must be changed with 2k2-2k4 to allow a ~20mA current to supply the two OP Amps on the board. I do not recommend to supply at such high voltage if a lower voltage is available. and always check the resistors value before power up the board at higher voltage. supplying the module with 56R resistors at +-60V will damage the resistors and some other parts on the board.
Old 7th April 2013, 03:43 PM   #4
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Join Date: Feb 2013
Excellent, thanks Cristi.


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