Older Flashguns.
Onwards and upwards for 2019.
Designed for six 'C" size dry cells, typically alkaline, the bulk of the housing is for the batteries.
The oscillator is under the cover on the opposite side of the on/off switch. I bought my TR power pack back in 1988 and it's worked well since.
The reverse side of the pcb - cover removed. The yellow item is the step-up transformer.
The component side of the pcb showing the step=up transformer and the two TO3 power transistors in cast metal heat sinks as they get warm in operation.
Back in it's case.
The flash gun AA battery container showing the polarity of the spring loaded contact pins
The plug on the TR pack that plugs into the back of the flash gun has three female connectors. Two are for the high voltage from the oscillator that goes to the capacitor in the flash gun and the third is the feed back connection that lights up the neon "ready" indicator on the TR power pack.
Best regards
The insides are very interesting. The AA container doesn't need a + or - sign as it has a location pin so you can't get it wrong.
CHEERS Vic.
Hope you enjoy the course your going to be doing.
Best regards
It's a great little model, hope you can pick up another one ....
Here's mine doing fine service with the Samyang 14mm (an A type lens, so not compatible with P-TTL), K7 and Gary Fong LightSphere .....
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
CHEERS Vic.
Best regards
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6300 posts
15 years
Best regards