230

Apollo AC Control Box and Sensor Assembly

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:400.00 - 600.00 USD
Apollo AC Control Box and Sensor Assembly

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Auction Date:2012 Nov 29 @ 18:00 (UTC-5 : EST/CDT)
Location:5 Rt 101A Suite 5, Amherst, New Hampshire, 03031, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
Apollo-era AC Control Box and AC Sensor Assembly, approximately 14 x 8 x 5, consisting of a “Box Assy-A C Power Control Unit,” S/N 063b2AAJ0431, a “Sensor, AC Over/Undervoltage,” by Autonetics, complete with manufacturer’s label, S/N 101740469BHA. The assembly sat on the output side of the three AC inverters to select the individual AC output from each of the 3 onboard inverters for application on the spacecraft's electrical bus, and to report (via alarms on the Apollo Main Display console) either an undervoltage or overvoltage condition generated as a result of an inverter not converting DC to AC voltage properly or because the DC input (supplied by the fuel cells), or improper/lost timing to the inverters and complete with the sensor’s relays. The assembly has three North American Rockwell tags tied to one end, dating from 1967-1975, for the control unit. In very good condition.