Radio vibrators

I forgot to mention that they come in various operating voltages and frequencies also.
I have some 2v,6v, 12v. and 28v volt ones here. (Possibly I even saw a 48volt one too.)
 The 2 volt generally operated off a Willard 2V wet cell in some old farm and "portable" radios.
 They also operated from 50 cy to 400 cycles too.
Be sure you use the correct frequency one in whatever equipment you are having to replace one in also. The wrong frequency vibrator output can damage the transformer.

Some car radios & commercial equipment used 100cycle vibrators and of course, all the military aircraft radios I ever saw used 400 cycle vibrators, as aircraft systems are mostly 400 cycle AC.

Also there were some vibrators I saw that by turning them 180 deg. in their socket, would let them operate on the reverse of the polarity of the DC incoming.
 IIRC, these were used in commercial equip. mainly about the time most big trucks and logging equipment were going from Pos. gnd. to  Neg gnd. (Some CB and aftermarket car radios also had this same feature).

Vibrators come in different types and pin configurations too.
Some have a base- (or in some military ones 2 bases!), and can have from 3 pins upwards to ?

Some vibrators are plug in and some are wired in.

Some are non-synchronous and some are synchronous (self rectifying) types, and can operate at different frequencies too.

They can be either pos. or Neg. ground.

The solid state vibrator replacements are NOT forgiving of reversed polarity either.

Most non- synchronous vibrators are used in car radios, and "Vibra-Packs".
Synchronous were mostly used in 2 way radios and some other military and commercial equipment.

You can also "restore" a mechanical vibrator by putting a 40 W lamp in series with the contacts and briefly running 120V thru it.
It will burn off the crud on the points.

Look at this web page.SS Vibrator Replacement

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