Ultrasonic trans/rec transducer support hardware

[bertus]

Hello,

@HANKMARS , the post in the email picture contains a spamlink, so i removed it.

Bertus

 

[HANKMARS]

Hello,

@HANKMARS , the post in the email picture contains a spamlink, so i removed it.

Bertus

Good deal. Thank you.

 

[kellys_eye]

Maybe a precision ten turn pot will remedy this. Expensive tho.

10-turn presets are CHEAP.........

 

[HANKMARS]

10-turn presets are CHEAP.........

What is a 10-turn preset?

 

[Delta Prime]

What is a 10-turn preset?

A potentiometer, commonly referred to as a “pot”, "trimmer","preset" is a three-terminal mechanically operated rotary analogue device which can be found and used in a large variety of electrical and electronic circuits.
.

 

[kellys_eye]

What is a 10-turn preset?

Multiturn Presets

ESR Electronic Components, Newcastle, North Shields, Cullercoats.The Electronics retailer for the north east of England.

www.esr.co.uk

 

[HANKMARS]

Multiturn Presets

ESR Electronic Components, Newcastle, North Shields, Cullercoats.The Electronics retailer for the north east of England.

www.esr.co.uk

The thot of trimmer pots went thru my head but I visualized the single turn 1M ohm ones that I use on another project and I ruled out trimmer pots. I resigned myself to having to use precision 10 turn pots with locking knobs, usually around 10 bucks each. Thanks for jogging my memory. I think the 10-turn PCB mount pots will still be a little "springy" but also think that they will stay set more so than the larger panel mount pots. Especially if I drop a little locktite or maybe nail polish on adjustment screw. This is the first time I heard these pots referred to as presets. But then again, it was just last year I first heard the term valve in reference to what I had for years called vacuum tubes.

 

[kellys_eye]

Shame you aren't UK-based. I could chuck a few items like those your way as I have a selection in my 'crap' box.....

 

[HANKMARS]

Shame you aren't UK-based. I could chuck a few items like those your way as I have a selection in my 'crap' box.....

The sentiment is much appreciated but I will order an assortment of "presets" for my own goodies box. The overall value I need in that particular leg of the circuitry is ~134k ohm. As it sits, I'm using a 68k fixed resistor and a 100k single turn panel mount pot. Because thats what I have on hand. If I change fixed resistor to ~ 130k then use a 10k pot, the springyness will be a lesser concern.

 

[HANKMARS]

10-turn presets are CHEAP.........

I can justify a 13 dollar expenditure.