Just want to say Hello!

With the resistor bypassed, this readout appears to work correctly with the DV-3M. Since SG-TC2 outputs a more or less constant voltage for the TC gauge tube heater instead of a more-or-less constant current as with SG-TC1, it will work for other Hastings TC gauge tubes having the same internal wiring except the DV-5 without any circuit changes to the heater current supply. I have confirmed that the DV-6M is compatible with my home-built control unit requiring only adjustment of the heater current and atm offset. The SV-1R is a rack-mount unit and I assumed that was what the "R" meant, everything else being identical. A photo of the meter scale of another old vacuum gauge matches that of the SV-1R and it has "DV-3M" scribbled on the panel which would appear to confirm that the SV-1R is indeed designed to use the DV-3. Approaches include the use of a dummy load for the heater of the proper resistance and/or powering the control unit with a Variac and starting low while monitoring AC heater current or voltage. CAUTION: Do why not try here install a TC gauge tube other than the one that SG-TC2 (or SG-TC1) has been set up for without making sure the heater current is less than the spec'd value for the new tube.

The heater circuit can power the DV-3 at its spec'd current (though at the low end of its adjustment range). Of course, the "Iset" position of the Meter Select switch is just for confirmation as the TC gauge heater current should never need to be adjusted after this for the remainder of the lifetime of the existing Universe unless the TC gauge tube is replaced. In addition, for the DV-5 and DV-8, the op-amp circuit will need to be modified to have 5 times the gain since the high vacuum output of these tubes is only 2 mV rather than the 10 mV for the DV-3, DV-4, and DV-6. But just in case I need a mobile rig, the battery is still in place - a relay automatically switches to the adapter if AC power is present. A battery powered control unit for the Hastings DV-4D TC gauge tube. This unit uses a small Sola constant voltage (ferro-resonant) transformer for regulation rather than zener diodes or a transistor oscillator fed from a regulated DC supply. The NV-100 does one thing differently though: It maintains the DV-100 heater at a constant temperature (within a limited current range) rather than using constant voltage or current.

Failing to do this may result in instant destruction of the tube by blowing the heater! So, either it uses a different TC gauge tube (perhaps the very obsolete DV-1 or something even more ancient). With all advanced technologies coupled with vigorous competition, buying a new machine is thinkable even for the most restrictive budget. What Are The Reasons For Opting Appliance Repair Service Instead of Buying a New Home Appliance? The company maintains offices in Los Angeles with satellite offices in Ventura and Orange Counties and enjoys a steadily increasing customer base, built primarily by word-of-mouth.Jenn-Air Appliance Repair in Torrance team leaders is typically electrical, mechanical or civil engineers who have made the transition to home appliance repair. We specialized in Whirlpool Dryer Repair and all kinds appliance problems and models such as: top load washer repair, front load washer repair, gas dryer repair, electric dryer repair, combo washer/dryer, oven repair, dryer repair, stove repair, cook top repair, electric oven and range repair, wall double oven repair, refrigerator repair, ice maker repair, dishwasher repair, wine cooler repair, and air conditioner repair. Small families choose the single door refrigerator it used to suit them and it has less space to store.

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