Clearance - one unit only. We have a single new, unused BI 7386 and won't be restocking this model, so it is priced to clear. Our 12 month warranty still applies. For an everyday 10k pot we keep on the shelf, see our WH148 B10K potentiometer.
This is a precision panel pot for when a normal single-turn knob is too coarse. The shaft turns three full turns from end to end, so each turn covers about a third of the range and you can set a voltage, a power supply output or a position reference much more finely. The 10k track is wound from resistance wire, which keeps it stable with temperature and gives a linearity of 0.25%.
Two things to check before you buy. The bushing is imperial 3/8-32, so it needs a 10.5mm panel hole, not the 7mm hole most small pots use. And it takes a 6.35mm (1/4 inch) knob, or a three-turn counting dial if you want to read the setting.
Specifications
Datasheets
Wiring & getting started
- Drill the hole
Drill a 10.5mm hole in the panel and leave about 25mm of room behind it for the body and the terminals.
- Mount it
Put the star washer on the bushing, push it through from behind and fit the hex nut on the front. Tighten to no more than 2.8 Nm, a firm nip with a small spanner. The thread is fine, so don't overdo it.
- Wire it as a voltage divider
The terminals are marked CCW and CW on the case, and the middle one is the wiper. Solder 0V to CCW, your reference voltage to CW, and take the output from the wiper. Turning the shaft clockwise then raises the output. Swap CCW and CW if you want it the other way round.
- Check it
With a meter on resistance, CCW to CW should read close to 10k at any setting. Wind the shaft fully one way: wiper to that end reads near zero. It takes three full turns to reach the other end.