Author Topic: Vactorol  (Read 594 times)

drog_trog

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Vactorol
« on: March 04, 2018, 05:48:19 PM »
Any ideas on this 4 pin vactorol, think it says VTL JA2








somnif

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Re: Vactorol
« Reply #1 on: March 04, 2018, 05:59:56 PM »
I know vactech is the company that came up with the term "Vactrol" back in the late 60s, so I'd wager thats a seriously old school representative. Can't find much on the specifics of that part though.

edit: Could be a "VTL-9A2", based on an incandescent lamp. PDF is a bit blurry but would suggest an off resistance of 10meg, on resistance of ...60 ohms? That seems off, but again, hard to read data sheet.

http://datasheet.datasheetarchive.com/originals/distributors/Datasheets-111/DSAP0026836.pdf
« Last Edit: March 04, 2018, 06:06:39 PM by somnif »

Matmosphere

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Re: Vactorol
« Reply #2 on: March 04, 2018, 06:47:56 PM »
Neat, if he is correct and it is incandesscent then it should probably get hot while itís  operational. 

I experemented with 3mm incandescent lights instead of leds and gave up on it cause they got way to hot.

drog_trog

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Re: Vactorol
« Reply #3 on: March 05, 2018, 03:49:14 AM »
Must be VTL9A2 then