Triplett Model 3433 Signal Generator
|On an Internet
Market Place I dicovered this fine signal generator. It is a versatile
apparatus though not in working order, right now. It is my intention to
get it up and running again but I have not come to it. Copys of the
manuals were kindly sent to me, so I hope to find some time soon, than I
will bring it back to life again.
I have taken extensive photo's of this 3433 that can be enjoyed on this page.
|Scale in detail
Very nice working vernier. Unfortunately, the previous owner did not cut his fingernails on time, so some paint around the knob is gone.
The scale goes around for 270 degrees, so a commercial, receiver type variable capacitor can be expected.
|Brand name and type number
Range switch and green control light. Printed dial was scratched by the same nails. :- (
|Modulation selector panel.|
|Deviation and output panel.
The PL-519 socket seems not to be original to me. And above that, the Hi-RF plug was removed.
I would like to bring that back to original, but need the manual to see what was used for these plug originaly.
|The meter circuit.|
Eight tubes and one crystal.
Observe the small tuning capacitor.
To the left one not original transformer. This transformer was made by Philips - The Netherlands, and according to the model during the 1950's. Originally these transformers are soaked in tar, so black. This one was painted grey.
To the right the frequency switch with around it an array of frequency controlling components. The small trimming capacitor, bottom right, seems to be added later.
|The Bliley Crystal Unit with
inside a 1 MHz crystal. This unit is a so called "oven". It has e heater
element inside that keeps the crystal on a constant temperature so
frequency shifting is kept to a minimum.
The unit is mounted on an octal plug, fitting an octal socket as used for tubes.
|Frequency section in detail.
Normaly this section is covered by a hood.
Observe and enjoy the craftsmanship that realised this.
|Upper section: Power Supply
Middle section: Power amplifier
Lower section: Output circuitry. Observe the shielded attenuator.
|Attenuator in detail. The PL-519 is completely shielded.|
That black capacitor is German made, the brown-black-yellow resistor is a Philips made. Both not in there when the machine left USA.
|Bank of capacitors.|
|(C) Photo's and text: 2011 - Van Zwam Computer Support - Velp - The Netherlands - All brands and brand names are property of their respective owners.|