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 Post subject: Found: Bogen CHA 75 Photofact 395-7
PostPosted: Jan Tue 08, 2019 5:53 pm 
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Joined: Dec Fri 22, 2017 11:32 pm
Posts: 54
Location: Oakland, Ca
I'm looking for this photofact. A digital copy is fine. Mostly looking for the output transformer specs. I found some scans online, but only about half the pages are included.

Thanks!

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Matt


Last edited by rufleruf on Jan Sat 12, 2019 3:18 am, edited 2 times in total.

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 Post subject: Re: WTB: Bogen CHA 75 Photofact 395-7
PostPosted: Jan Tue 08, 2019 10:12 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 5100
Location: Rochester NY USA
I should have it. But I don't trust Sams for transformer specs. Power transformers are measured load - safe, but transformers may be good for more. Output transformer impedance is often questionable.


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 Post subject: Re: WTB: Bogen CHA 75 Photofact 395-7
PostPosted: Jan Fri 11, 2019 10:50 pm 
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Joined: Sep Tue 30, 2014 6:08 am
Posts: 3498
Location: The Old Dominion VA 23518
Per Sams 395-7 (Challenger CHA75)


Output transformer:

PRI impedance 3300 Ohms
SEC impedance 65 Ohms and tapped winding 16 Ohms with taps at 8 and 4 ohms

Power transformer
PRI 117 @1.1A
Sec 1 870VCT 52mA, tap at 37V, 1mA
Sec 2 5V 6A
Sec 3 6.3VCT 7A

_________________
Brian
"Capacitor Cosmetologist since 1979"
USN Retired 1984-2006 (Avionics/Cal)


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