- published: 14 Nov 2015
- views: 1281
At long last - the General Class videos are finally here. This is a 3-part session that took some time to edit. I wasn't happy with the session I recorded in Spring of 2016, so I had to wait until September for the W5HRC club's next class. Then editing, traveling and all of the other videos pushed it back some - but it is finally here and good until 2019. So you have about 2.5 years to go get your upgrade. Let me know in the comments below once you pass your exam!
Exploring the General Radio 1650-A impedance bridge circa 1966.
Using the General Radio impedance bridge to verify primary impedance of an audio transformer with varying loads on the secondary.
From their Owner's/ Service Manual: "The Type 1412-BC Decade Capacitor is a high-quality, wide-range instrument ideally suited to decade capacitor applications ranging from experimental circuits on a laboratory bench to permanent installations in a relay rack. Designed for versatility, this Decade Capacitor features fine adjustment over a wide range of capacitance, high resolution, and provision for two- or three-terminal connections on either the front panel or the rear of the instrument. The decade box has polystyrene capacitors with excellent dc and ac characteristics. Its low inductance permits use up to the supersonic frequency range with relatively little change in effective capacitance. The capacitors are housed in a double shielded inner box... Ceramic-insulated switches, with sol...
This is a short follow up to the previous video on the General Radio 1803-A VTVM. In this piece we demonstrate that it now functions within specifications. The link to the General Radio Experimenter article mentioned in the video is http://www.ietlabs.com/pdf/GR_Experimenters/1950/GenRad_Experimenter_April_1950.pdf.
A beautiful 67 year old General Radio instrument that works. Measures the complex admittance of circuits and components.
CAUTION: SHOCK HAZARD!!! This unit does not put out enough current to kill you (unless you have a bad heart), but the shock WILL HURT (Minimum 10V will put out 50 milliwatts, Maximum 1090V will put out 5.45 Watts). NOTE 1: Every time you relocate the Megger to another work location or whenever you change the Voltage setting, verify that the needle returns to Infinity and re-do the Calibration Procedure (aka Set Infinities) as necessary. NOTE 2: If either Set Infinity or Set Infinity Highest Range cannot be attained, even after resetting the needle with the mechanical adjustment, reject the Megger. Internal calibration is required and your readings will not be accurate. ---------- 1863 and 1864 Megohmmeters Instruction Manual Operation - Section 3 3.1 MEASUREMENT SETUP. 3.1.1 Ground...
Warning: Video contains FLASHING LIGHTS and FLICKER. Please don't watch if you are sensitive to flicker, or have epilepsy or any other seizure disorder. If you feel nauseous or headachy, please look away. Thanks! Erratum: At one point in the video I refer to the series resistor as "170k" but as I stated at first, and on the schematic, it's actually 120k ohms, and two of them in parallel on the 2n2222 module give 60k ohms. I finally figured out how to trigger the General Radio 1532-AB StroboTac with the external trigger input. I do have the original GenRad Delay unit for it, but it doesn't seem to be working. However, the system I've come up with should work better, since I'll be able to set a precise delay digitally using the Arduino in software. Here I just show the triggering system it...
This video shows the repair and calibration of the oscillator circuit which was found to be off frequency, unstable and started to distort at just over 1vP/P. This is not a comprehensive video like usual but covers the repair, as i was not expecting to find this level of damage
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General Elektriks - Raid the Radio Taken From: "Good City for Dreamers", released on the 23rd of February 2009 iTunes: http://bit.ly/1dFdZP4 Facebook: http://www.facebook.com/generalelektriks Myspace: http://www.myspace.com/generalelektriks Label: http://www.discograph.com/generalelektriks/