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Five volt over voltage protection |
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|  MIL-P-6221B(AR)
3.3.4 "Q" motor on-time limiting. Under the full-load conditions, item
1.1 of table I, with the tank power, item 2.1 of table I, supplied to 20 + 1
Talc, with the EMER POWER switch A31S1 in the ON position and with the FIRE
signal, item 3.1 of table I, supplied as specified in figure 2, the output
signal between A2P1-12 and A2P1-9 (rtn) shall be as specified in figure 2.
(See 4.6.2.4)
3.3.5 Five volt overvoltage proection. Under the reduced-load
condition. Item 1.2 of table I, with tank power, item 1.1 of table I, applied
at 28 2 Vdc and with the EMER POWER switch A31S1 in the ON position and with
the 5V overvoltage load resistor, item 1.5.1 of table I, momentaraily connected
between the test points specified, the output between pins A2P1-15 and A2P1-9
(rtn) shall be a dc voltage not greater than 1.5 Vdc. Subsequently, when the
emergency power witch S1 is not to OFF momentarily and then to ON, the output
between pins A2P1-15 and A2P1-9 (rtn) shall be 5.2 0.5 vdc. (See 4.6.2.5)
3.3.6 Overcurrent protection. Under the full-load condition, item 1.1 of
table I, with the tank power, item 2.1 of table I, applied at 28 2 vdc, with
the EMER POWER switch A31S1 in the ON position, the output between pins
A2P1-15 l and A2P1-9 (rtn) shall be 5.2 0.5 Vale. With momentary application
of the overcurrent load resistor9 item 1.4.1 of table I, between pine specified
therein, the output between pins A2P1-15 and A2P1-9 (rtn) shall be not greater
then 1.5 Vdc. Subsequenty, when the EMER POWER switch is set to OFF
momentarily and then to 0N, the output between A2P1-15 and A2P1-9 (rtn) shall
be 5.2 0.5 Vale. (See 4.6.2.6)
3.3.7 Relay interlock. Under the full-load condition, item 1.1 of table
I, with the tank power, item 2.1 of table I, applied at 28 2 Vdc and with
the EMER POWER switch A31S1 in the ON position, the output between pins
A2P1-15 and A2P1-9 (rtn) shall be 5.2 0.5 Vdc. When the relay interlock
return interconnection , item 4.1 of table I, is removed the output between
pins A2P1-15 and A2P1-9 (rtn shall be less than 1.5V. (See 4.6.2.7)
3.3.8 PFN low charge voltage. Under the full-load condition, item 1.1 of
table I, with the tank power, item 2.1 of table I, applied at 28 2 Vdc and
with the EMER POWER switch A31S1 in the ON position, the output between pins
A2P1-2 and A2P1-17 (rtn) Shall be 0.2 0.2 Vdc. With the EMER POWER switch
in the EMER TEST position, the output between A2P1-2 and A2P1-17 shall be 6.9
0.7 Vdc. (see 4.6.2.8)
3.39 Computer ON characteristics. Under the full-load condition, ices
1.1, table I, with the tank power, item 2.1 of table I, applied at 28 2 Vdc
and with the computer ON power item 2.2, table I applied, the voltage between
pins A2P1-15 and A2P1-9 (rtn) shall be 5.2 0.5 Vdc. (See 4-6.2.9)
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