RCA COSMAC Operator's Manual page 98

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PERFORMANCE SPECrFICATION
1.0 GENERAL
BOARD ASSEMBLY 3900537-501, VBK1, IS AN INTEGRAL PART OF
POWfR SUPPLY ASSEMBLY 3902533-501. IT IS INTENDED TO
OPERATE FROk TRANSFORMER 3900140-1, OR A SIMILAR POWER
SOURCE. .
THE POWER SUPPLY ASSEMBLY REFERENCED IS FIRST MADE FOR
THE COSMAC SYSTEM. IT IS INTENDED TO BE MOUNTED WITHIN
THE NEST ASSEMBLY, AND OCCUpy A SPACE OF SIX CARD PITCHES
MAXHIUM.
THE POWER SUPPLY ASSEMBLY CONSISTS OF THIS BOARD, THE
REFERENCED TRANSFORMER, FIXED-VOLTAGE HYBRID REGULATORS,
AND A
pnp
CURRENT BOOST TRANSISTOR MOUNTED ON HEAT SINKS,
WniCH ARE IN TURN MOUNTED ON THE SOLDER SIDE OF THIS
BOARD. THE TRANSFORMER AND BOARD ASSEMBLY WITH IIEAT
SINKS ARE HELD TOGETIIER BY A MOUNTING BRACKET TO MAKE AN
INTEGRAL UNIT. PERFORJ.IANCE CIIARACTERISTICS ARE SPECIFIED
FOP. THE ASSHIBLY AS A WHOLE. 1IIE DC OUTPUTS ARE NON-
ADJUSTABLE, AND ARE CURRENT LIMITED. TIllS ASSHIBLY DOES
NOT PROVIDE OYER-VOLTAGE PROTECTION.
2.0 ELECTRICAL
PERFORJ.~NCE
2.1 INPUT·VOLTAGE
a.
115 VAC NOMINAL
b. 104 YAC MINIMUM
c. 127 YAC MAXIMUM
2.2 INPUT CURRENT
a.
0.55 AMP RMS MAXIMUM AT HIGH LINE FULL LOAD
b. INPUT SIIALL BE FUSED AT 0.75 AMP
2.3 OUTPUT, El
a.
VOLTAGE: +5.0 VDC ~0.2 VDC
b. FULL LOAD CURRENT: 2.5 ADC MAXIMUM
c. LIMIT ING CURRENT: 3.5 ADC MAXIMUM
2.4 OUTPUT, E3
a.
VOLTAGE: -9.0YDC to.4SVDC
b. FULL LOAD CURRENT: 0.4 AMP MAXIMUM
c. LIMITING CURRENT: 1.7 AMP MAXIMUM
3.0 ENVIRONMENTAL CONSlnERATIONS
3.1 TEMPERATURE: O·C TO 43·C
3.2 HUMIDITY: 0 TO 95\ R.II.
VBK01
(CON'T)
R1
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