- Mystery motor controller, anyone recognize it? - 2 Updates
- Gert big storm heading our way? - 2 Updates
| bob prohaska <bp@www.zefox.net>: Aug 13 07:15PM > It might help if you could move the wires that obscure the marks on the > 6 leaded module not on the circuit board. Barring that what does it say? Sorry, it's a reliance electric 701819-X . Web searches find it for sale, but I haven't found anything like a spec sheet. It's described as a rectifier, but with six leads it's likely to be more than just that. http://www.zefox.net/~bob/lathe/ contains a few more images. Thanks for reading, bob prohaska |
| Geo <nhhu-o3hu@dea.spamcon.org>: Aug 14 09:39AM +0100 On Sun, 13 Aug 2017 19:15:52 +0000 (UTC), bob prohaska >Sorry, it's a reliance electric 701819-X . Web searches find it for sale, >but I haven't found anything like a spec sheet. It's described as a >rectifier, but with six leads it's likely to be more than just that. It is a full bridge rectifier but two arms of the bridge use SCRs instead of diodes. Their gates are controlled (via the G1 and G2 terminals) to switch on for a variable portion of a cycle thus varying the power transferred. A Solartron variable bench power supply of that vintage used the technique to reduce the input to the linear regulator when then output voltage was dialled low and the 5 Amps would have resulted in too high a dissipation in the regulator transistors. |
| N_Cook <diverse@tcp.co.uk>: Aug 14 08:52AM +0100 http://www.nhc.noaa.gov/graphics_at3.shtml?cone#contents how often does a 74 to 110mph system get beyond 40 degrees north? |
| N_Cook <diverse@tcp.co.uk>: Aug 14 08:53AM +0100 On 14/08/2017 08:52, N_Cook wrote: > http://www.nhc.noaa.gov/graphics_at3.shtml?cone#contents > how often does a 74 to 110mph system get beyond 40 degrees north? wrong bit of usenet |
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