Clearly, something that will need to be replaced. Any attempt to bend the cord produces another break in the insulation. The handle is broken, and the electrical cord has lost all pliability. Nowadays it is best known as a “Switchcraft” connector, probably because Switchcraft is the only company still producing them. This connector was more common in the 1950′s, and was used in several brands of test equipment (Heathkit, Triplett) and microphone cables. Note the unusual probe connector in the lower-right corner. Click on the pictures for larger versions:Ī closeup of the controls. Although I cannot say for certain that 1973 is when that subsequent model was introduced, I do suspect that the tube-based Master VoltOhmyst was discontinued before the transistor-based model was introduced, with the Senior model becoming the flagship in the interim period.Įnough chat here’s some photos. I also discovered a manual, dated 1973, for the WV-510A, which is a transistorized Master VoltOhmyst.
RCA WV 500B VOLT OHMYST FOR SALE SERIES
Richard McWhorter ( AllAmericanFiveRadio) showcases and repairs a WV-87B in a series of videos on his YouTube page. Somewhere around 1956, RCA introduced the WV-87B, which brought a few minor improvements. Inside, 5 tubes were reduced to 3, and 17 capacitors were reduced to just 7. Functionally, the voltage and current ranges were increased, capacitance measurement dropped, and the front panel was redesigned for simpler operation and to allow for the big panel meter. That was replaced in 1951 by the WV-87A, which appears to be a complete redesign. It was a 5-tube setup with the ability to measure capacitance. The Master started out, probably in the late ’40s, as the WV-95A. I don’t believe that every model was sold at the same time, but during the years in which it was manufactured, the Master VoltOhmyst was the top-end model. RCA had a whole family of multifunction VoltOhmyst meters - the Standard (non-specified), the Advanced, the Junior, the Senior, and the Master. Lots of companies made vacuum tube voltmeters (VTVMs) back in the day, but the RCA Master VoltOhmyst has the biggest panel meter I have ever seen - with one notable exception. So I bought this thing on eBay for $19.99: Additionally, there are a few situations when seeing a moving needle is more useful then getting an accurate absolute value. My small collection of digital multimeters has served me well, but the moving needle of old-school VTVMs has a certain romantic appeal. I’ve had a nagging desire for an analog voltmeter for several years now.
0 kommentar(er)
