[Boatanchors] [BoatAnchors] 812 Self-Rectifying Power Oscillator

[Roger Ruszkowski]

Fellows,

I looked at the photo.

Once upon a time I use to take care of some plastic melting machines.

The unit in the photo looks like the RF units that provided the RF energy.

The plastic was special.
1975 - 1978 dodge Chrysler autos

The plastic was a sleeve around a tail lamp socket.
 After we inserted some wires with terminals.

You placed the assembly in a jig that squeezed the plastic sleeve
flat and around the wires.

You stepped on a second foot switch and the power tube come on.
RF current flowed from one jaw of the jig, through the sleeve plastic
and into the other jaw of the jig.

The RF heated the plastic and it all made a nice weather tight bond for
the tail lamp assembly.

To much and you had mush to little and you did not get a seal.
That was all in the machine cycle timer.

It was all magic. Just the right plastic, the right time, the right amount of RF.


We had three of the RF bonding machines in the factory with just different jigs to fit
different wire assemblies.

The whole thing was shielded so it did not radiate RF beyond the machine.
So it was all legal from the RF stand point.

We were assured that the operators were not getting over dosed with RF.

I just chose not to hang around the machines when they were being operated.

Roger AI4NI





-----Original Message-----
From: David Stinson <arc5 at ix.netcom.com>
To: boatanchors <boatanchors at mailman.qth.net>
Cc: boatanchors <boatanchors at theporch.com>
Sent: Wed, Jul 25, 2012 3:43 pm
Subject: Re: [Boatanchors] [BoatAnchors] 812 Self-Rectifying Power Oscillator


I think ultrasonic cleaner is best idea so far.
Tank too low-freq for diathermy:  Here's a couple of photos.
Note the big stack of mica caps in parallel in the tank.

http://home.netcom.com/~arc5/_images/812po1.jpg
http://home.netcom.com/~arc5/_images/812po2.jpg
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