Triumph 830
1943
The Triumph 830 is labeled an oscillograph-wobbulator on the front panel. It is essentially an oscilloscope with a built-in frequency sweep generator called a "wobbulator" because it "wobbles" the frequency around a set center frequency and is used for aligning intermediate frequency (I.F.) stages in radios or televisions. It can also be used as an ordinary oscilloscope as well.

Schematic:triumph830schem.jpg

 
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Jon Stanley