[R-1051] Oven Bridge Resistor

Conklin/Straw ligature at burlingtontelecom.net
Tue Mar 27 15:24:15 EDT 2012


The schematic on the B variant shows it as a 3.9k  + - 1% resistor, in a bridge circuit with R13, 14, 15 & R16.
Bruce


On Mar 27, 2012, at 8:45 AM, Steve Hobensack wrote:

> 
> I am trying to repair the oven bridge resistor mounted on the underside of the oven on the frequency standard module. I removed the plastic foam with a drimmel wheel. The resistor is cooked, and split open. It is a wire wound resistor using extremely fine wire. Is this resistor a thermistor? What is the cold resistance? I cannot measure because the fine wire is destroyed. This resistance can be found by pulling the crystal board from  the oven . There is a 5 prong connector at the bottom of the oven cavity. Pin 5 is 5 MHz output, 4 is 28vdc, 2 is the top end of the oven heater wire. The bridge resistor is between prong 3 (middle) and chassis ground pin 1.
> Thanks
> Steve N8YE 		 	   		  
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