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John - Sparkie ツ's photostream
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1:1 Guanella Current (Choke) Balun
1:1 Guanella Current (Choke) Balun wound on 2 stacked FT240-43 ferrite torroid cores.
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Uploaded on Jan 24, 2012
1:1 Guanella Current (Choke) Balun
1:1 Guanella Current (Choke) Balun wound on 2 stacked FT240-43 ferrite torroid cores.
All rights reserved
Uploaded on Jan 24, 2012
4:1 Ruthroff Voltage Balun
4:1 Ruthroff Voltage Balun wound on a T200-2 iron powder torroid core.
All rights reserved
Uploaded on Jan 24, 2012
Nissei DPS-300GL
Inside the Nissei DPS-300GL power supply. This one had 2 blown shorted bridge rectifiers, which were replaced.
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Uploaded on Jan 24, 2012
M0UKD/P - FT-817 & homemade 40w amplifier.
M0UKD/P
The Church Of The Immaculate Conception - Farm Street, London W1
MRF151 MOSFET - Fried Macro!
This MRF151 was not working. Cracking it open showed it had suffered a pretty serious failure!
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Uploaded on Jan 8, 2012
London Ambulance interior.
Regularly irregular heart rate
