Weir 413 - Page 8

Depress the upper meter push-button. Apply a load of 2-0A (4-0A on 413) and adjust RV5 (METER A) so
that the meter reads 2.0A (4.04 on 413). Reduce the load current to 1-0A (2-0A on 413), depress the
lower meter push-button and check that the meter reads 1-0 £0.02A (2.0 £0.04A on 413).
The unit is now set up. Replace the cover.
5.0 SPECIFICATION
Line Supply: 110, 120, 220, 240V +10%
90-60Hz selected by external voltage selector
Outputs (selected by push-button):
413 5V +1% at 1, 2 or 4A
Oro ee on OL AA
0-15V at 1 or 2A
0-30V at 1A
423 9V +1% at 0.5, 1 or 2A
0-15V at 0-5, 1 or 2A
0-30V at 0.5 or 1A
0-60V at 0-5A
Line regulation: <0.02% of maximum output for 10% line change
Load Regulation: <0.05% of maximum output for 100% load change
NOTE: Maximum output refers to the maximum voltage on
the range selected.
Ripple and Noise: <1mV peak-to-peak
Output Impedance: <1mQ at 1kHz
Temperature Coefficient: < 0.02%/°C (typical)
Transient Response: Recovers to 50mV within 20us for full load step change
Current Limit: Nominally 110% of selected full load current
Meter Range (selected by push-button):
413 0-10 and 0-30V; 0-2 and 0-6A
423 0-20 and 0-60V; 0-1 and 0-3A
Centre Tap Tracking ('D' suffix only): 49 to 51% of total output +100mV (down to 4V total output)
Centre Tap Line & Load Regulation, Ripple,
Output Impedance & Temperature Coefficient: As specified for full supply
Centre Tap Transient Response: Recovers to 50mV within 30us for full load step change
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Operating Temperature Range: 0-45 C
Dimensions All Over Projections: 255mm deep x 180mm high x 198mm wide
(10 x 7 x 6 inches)
Weight: 413 and 423: 4.4kg (9155 1102)
'D' options, add: 0-1kg (3.502)
PARTS LIST
Main Assembly Power Supply - see Fig.2.
Circuit Ref. Description Value Rating Tol. Type
Capacitors
C8 (423D) Electrolytic 100g 35/40V -10, +50% Mullard 016
C8 (413) Electrolytic 220u 35/40V —10,+50% Mullard 017
C8 (413D) Electrolytic 2201 25V -10, +50% Mullard 017
C8 (423) Electrolytic 100u 100V -10, +50% TEREE ENWAU
CONH ed dai