[Milsurplus] TCS Receiver on High Voltage DC-DC Brick

[Jim Whartenby]

Also from HK, Ebay item  283388983489 looks to be the same at almost half the price also with free shipping.  Gotta love capitalism!JimI wonder why people argue over the 10% of their differences and ignore the 90% they agree on? 

    On Wednesday, March 6, 2019, 1:56:13 PM CST, David Stinson <arc5 at ix.netcom.com> wrote:  
 
 They seem to have improved those little yellow
High-Voltage
DC-DC converters, sourcing enough power to make
them 
more useful.  You can find'em on Ebay and Amazon
for 
8 or 10 bucks, like this one:

https://www.ebay.com/itm/183717171988

They spec them for 20 Watts continuous.  Recently
got a couple and decided to try one on a newly-
revived TCS receiver.  Set the output for 190V.
At that B+ the TCS draws about 70 mills at full
volume, about 13 Watts.  Ran it for 
a couple of hours and the FET never got beyond
comfortably warm to a fingertip and the 
heatsink remained cool.

https://photos.app.goo.gl/6j3H8cdxRsGxVJdY6

Upsides:  
Easy-peasy regulated B+ supply.
TCS is best with regulated B+
Run the whole radio off 12VDC.
Cheap.  Tiny thing.

Downside:
RF noisy, so it must be shielded
with filtered leads in/out.

GL OM ES 73 DE Dave AB5S


______________________________________________________________
Milsurplus mailing list
Home: http://mailman.qth.net/mailman/listinfo/milsurplus
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Milsurplus at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20190306/55e2f375/attachment.html>