Wow!
Ex pulls from some 1980's Philips communication control systems.
None of your "plastic jobbies" here, the substrate is ceramic with a beautifully engineered wiper design
ALLEN-BRADLEY - Miniature Trim Potentiometer
Made in UK
Taper: Linear
Value: 20K
Mounting: horizontal (PCB)
2x round 0.85mm diameter solid pins and one 1x flat leg which makes for very secure attachment to the PCB
Ceramic substrate
Each trimpot is identified topside with the following stamped into the metal (extremely small!)
UK
(AB logo)
Value (e.g 20K)
DIMENSIONS:
Body diameter 10mm
Slot length 5mm (easy to make adjustments)
When fully inserted into a PCB, height is only 2.75mm off the board i.e low profile
Top adjustment access, slot screwdriver
COSMETIC CONDITION:
USED ex communications control system equipment (Philips)
CLEAN
Shiny metal!
NO ceramic substrate damage or cracking!
Smooth rotation of the wiper
TESTING:
As this is OLD stock and I took the opportunity to run a quick DC resistance test, and check for smooth variation in resistance as the wiper is moved.
I have measured this trimpot as having a track resistance of 21.9K Ohms - well within 10% tolerance of the nominated value
Wiper travel resulted in smooth changes in resistance although I have not gone to the trouble of checking linearity.
