| To: | "Discussion of Ten-Tec Equipment" <tentec@contesting.com> |
|---|---|
| Subject: | Re: [TenTec] Eagle -- power measurement |
| From: | "Roy" <royanjoy@ncn.net> |
| Reply-to: | Discussion of Ten-Tec Equipment <tentec@contesting.com> |
| Date: | Sat, 2 Apr 2011 10:46:35 -0500 |
| List-post: | <mailto:tentec@contesting.com> |
Don't dismay...there's a way.A 52-ohm dummy load with a rectifier and filter cap yields an accurate dc voltage in proportion to the power being dissipated. Today's vom's and dvm's are pretty accurate (average the readings of all your meters). The rectifier can be a 6AL5 with its plates connected in parallel, and its heater connected to its cathode, so the output voltage rating is high enough for a kw. The plates are connected to the hot side of the dummy, and a 0.01 disc in parallel with say a 1-uF connect to the cathode for a positive dc voltage out with a hold time for peak readings. It's inherently self accurate and requires no calibration. 73, Roy K6XK |
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