Apologies for the tongue in cheek title but I have recently come across a Plessey vibrator with an RAF section ref 10K so its for radio systems. I am going to have to concede I cannot think of a reason a radio system needs a vibration unit? Any ideas?
10K/20419
VIBRATOR
TYPE 103
CP 73484/24
Packed 1960
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By: Deskpilot - 20th May 2017 at 03:17
When I was in the RAF many years ago, I bought a Nash Rambler Station Wagon that had a defunct radio. Being an electronics tech, I removed it and found the fault to be a burnt-out vibrator. I fixed it in about three minuets and had it running again. The vibrator is, as AndyY states, a method of obtaining ac current from a dc supply. The ac can then be transformed to higher voltages to power the radio valves. This is a Nash Rambler if you’re not familiar with it. LHD of course.
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By: AndyY - 19th May 2017 at 15:19
Hi Ash,
Lots on the web, for example https://en.wikipedia.org/wiki/Vibrator_(electronic)
Andy
By: Meikle Ley - 19th May 2017 at 14:26
Hello again Andy 🙂 I should have thought just to ask you anything radio related! That is fascinating though as I try to get my entry level electrics knowledge around how to boost a voltage that way. I think I know what this evenings reading will be about!
Ex Brat – Unfortunately no its just a silver tube. If it was a nice glass one I would be keeping it :highly_amused:
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By: AndyY - 19th May 2017 at 14:03
Hi Ash,
The vibrator causes a set of contacts to open and close rapidly, so the DC supply to the radio power unit is switched on and off. This can then be input to a transformer to increase the voltage to what the radio needs for its HT, maybe 250 volts. Used in preference to a rotary machine if the power required is low. Only relevant to valve equipment of course, so now an obsolete technology.
Andy
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May 19, 2017 at 1:24 pm