Do you think they would still use the same name for this? - Page 2 - diyAudio
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Old 11th December 2012, 04:55 AM   #11
grufti is offline grufti  United States
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It sort of makes square waves.
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Old 11th December 2012, 02:12 PM   #12
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See this thread for an explanation. There is a link to the theory behing it in one of my posts.

New DC to AC to high voltage AC idea?

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Made quite the racket, but I guess the cars of the day were pretty noisy as well!!
My car was rather quiet. In fact you couldn't hear the motor running at an idle. It was a low compression flathead rated at 97 HP. The vibrator in the radio could be felt on the metal dash, but not heard. Yours was probably old. The vibrating element inside is encased in foam rubber. The foam doesn't last long inside a hot metal box full of tubes that is mounted inside a hot car. Only Cadillacs had AC in the 40's.

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I took apart some old (then) military tube equipment, it had a dynamotor in it. I never ran the thing, but I presume it generated dynamotor hum...
The old military dynamotors did make a racket. the DC they generated was pretty clean only needing a 47uF electrolytic or so to be suitable for the plate supply. I got some new production (70's) Carter Dynamotors which were relatively quiet. I found them at the auction when the Pearce Simpson radio distribution center shut down. They imported Japanese CB radios in the 70's and 80's. There was an "engineering lab" in the back, where I found sweep tubes, big coils, and 600 volt Carter dynamotors......I wonder what these guys were up to????

Carter dynamotors were used in a lot of military and civillian police radios dating back to the 40's. They still make a few dynamotors today.

Carter Motor Company
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Old 11th December 2012, 03:48 PM   #13
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The German word is Zerhacker. Great name for a horror movie: Edward Zerhackerhands (but I don't think it 'll fly)! E
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Old 11th December 2012, 05:53 PM   #14
jlsem is offline jlsem  United States
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Quote:
Originally Posted by scott wurcer View Post
Do you think they would still use the same name for this?
Probably so. Now if had been called a dildo...

John
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Old 11th December 2012, 06:21 PM   #15
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Originally Posted by jlsem View Post
Probably so. Now if had been called a dildo...

John
One thing I found funny is that the name is not a very useful description of what it does. Chopper, switcher, ??, I was told many years ago it was a shortening of vibrating relay.

There was at least one dynamotor humming away Friday night.
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Old 12th December 2012, 02:50 AM   #16
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It was called Vibrator because it vibrated.

Search Google for Vibrator: Google60 – Search Mad Men Style

However, it is 1960'Th version of Google, but it works!
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Old 12th December 2012, 03:29 PM   #17
gpapag is offline gpapag  Greece
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Quote:
Originally Posted by scott wurcer View Post
One thing I found funny is that the name is not a very useful description of what it does. Chopper, switcher, ??, I was told many years ago it was a shortening of vibrating relay.
All these names fit to the function, as they were the main part on DC/DC (or DC/AC) power converters many decades ago for military and/or commercial field receivers-transmitters (and home/car radios).
I have opened a few cans. Their usual problem is pitting on the relay’s contact surfaces.
Some have a very complex construction inside and attention to mechanical details/spacing when reassembling is crucial.

George
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Old 12th December 2012, 03:39 PM   #18
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I hate to continue this but opening a few cans and vibrators seem to fit together.
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Old 12th December 2012, 07:04 PM   #19
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they were the main part on DC/DC (or DC/AC) power converters many decades ago for military and/or commercial field receivers-transmitters
For most every vibrator there is also an 0Z4.
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Old 12th December 2012, 07:16 PM   #20
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Back in 1990 my buddy had a Lada from around 1985/86. The voltage regulator off of the alternator was a vibrator (chopper).

Funny...we were working on the car one day because the headlights were really dim and brown (old incandescents). I was hlding a wrench and my hand slipped and I accidentally shorted the regulator (input to output) so the entire output of the alternator went to the headlights (and the battery). I still remember the brief blue flash (like an arc welder) reflected on my friend's forehead. It lasted about 2s.

We had to replace all of the bulbs...and the battery.
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