What type of potentiometer is this?

[BobbyHood]

I need to find a replacement for this but my searches on mouser aren't getting me anywhere. It has 5 posts and an off switch that breaks the circuit when turned all the way to one side. The only marking is 10K.

 

[Diver300]

Potentiometers with switches used to be very common, but it's been a long time since audio equipment was made with knobs that directly control the volume.

There was a time when the on-off switch on most radios would be operated by turning the knob all the way to one end, but as soon as you want to have remote control, or anything that turns the radio on or off automatically, there can't be a switch like that on the volume knob.

I really can't think of anything less than about 30 years old that uses one of those, so it's going to be hard to find a spare part.

Can you fit a simple potentiometer and wire up a separate switch?

 

[Diver300]

Having said that, ebay has something:- https://www.ebay.co.uk/itm/120774177287 which is a logarithmic potentiometer. https://www.ebay.co.uk/itm/254604782512 is a linear one.

If the one you have is vaguely working, you should find out if it is a linear or logarithmic potentiometer. To do that, turn the potentiometer to the mid position, and measure the resistances between the three pins that aren't the switch.

One resistance should be very close to the sum of the other two.

If the other two are within about 10% of each other, it's a linear potentiometer. If not, it's a logarithmic one.

 

[Reloadron]

10K Linear taper W/ ON Off switch.

Dual 10K Audio Taper (non-linear) W/ On Off switch.

The dual would just leave 1 pot unused. Frequently a good washing out with tuner / contact cleaner will fix a pot. Even getting some isopropyl alcohol in there and working the pot will clean them up.

 

[Nigel Goodwin]

I need to find a replacement for this but my searches on mouser aren't getting me anywhere. It has 5 posts and an off switch that breaks the circuit when turned all the way to one side. The only marking is 10K.

It's a standard old volume control from cheap Japanese/Chinese radios - you can get them from America, we order them at work from there, as we can't source them in the UK.

It will be a log pot, as it's a volume control and on/off.

 

[Nigel Goodwin]

Here you go, this is where we buy them from:

10K OHM Logarithmic Taper Potentiometer On-Off Switch Solder Lugs Knurled Shaft Dia: 6mm

ALPHA - Get It Fast - Same Day Shipping

www.taydaelectronics.com

 

[gary350]

Volume control with on/off switch.

 

[Nigel Goodwin]

Volume control with on/off switch.

Bit late to the party, when all previous posts have already exlained that