#mod Archives • Bent-Tronics https://www.bent-tronics.com/tag/mod Get Bent! Tue, 15 Jan 2019 04:58:39 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.2 https://www.bent-tronics.com/wp-content/uploads/2018/12/cropped-BT-Tube-Only-32x32.png #mod Archives • Bent-Tronics https://www.bent-tronics.com/tag/mod 32 32 Video: I add 10-turn pots to my variable power supply for more precision control https://www.bent-tronics.com/2015/11/variable-power-supply-add-10-turn-pots.html https://www.bent-tronics.com/2015/11/variable-power-supply-add-10-turn-pots.html#respond Sun, 22 Nov 2015 16:59:00 +0000 https://www.bent-tronics.com/2015/11/22/video-i-add-10-turn-pots-to-my-variable-power-supply-for-more-precision-control/ My bench top power supply only had single turn potentiometers, so I added 10-turn pots for more control.   The power supply in question is an HQ Power (Velleman) PS1503SBU (Amazon; Jameco). I was able to replace the factory single turn pots with these 10-turn pots from Jameco, and now...

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]]> My bench top power supply only had single turn potentiometers, so I added 10-turn pots for more control.

 

The power supply in question is an HQ Power (Velleman) PS1503SBU (Amazon; Jameco). I was able to replace the factory single turn pots with these 10-turn pots from Jameco, and now have more precise control of the voltage and current settings.

The formula for adding the 22k pots in parallel to the 10k pots is: Rtotal = R1×R2/(R1+R2)

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