Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Frank -
I just measured a late R-4C. Voltages measured with receiver ON, in Standby
Mode.
Primary voltage = 123 VAC
Red - Red/Yel - Red
124 - 0 - 124 VAC
39 - 0 - 39 Ohms
150 VDC @ ~ 45 mA
Blu - Blu/Yel - Blu
13.5 - 0 - 13.5 VAC
0.5 - 0 - 0.5 Ohms
15.4 VDC @ Emitter of Q2. The Class A AF Output stage draws about 0.5A in Standby, which is the
majority of the load on the 14 VDC supply. Probably no more than 750 mA total current from this supply.
Grn - Grn
6.9 VAC
0.2 Ohms
2.1 Amps
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs
<www.k4oah.com>
Radio Vintage wrote:
Hallo
Which are the characteristics in_* Volt and Ampers*_ of the
transformer of power source of the :
_*AC4*_
Red - Red
Yellow - Yellow
Blue - Blue
Filament
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