Quote:
Originally Posted by Bruce MacMillan
The capacitor is VAOS p/n ZA2060, X.5 5KV MK II. It was used with the British 19 set HP, the WS22 and the WS11.
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It goes back to WW1, since the 1940 edition of the Z1 VAOS lists:
ZA.8486 (I think this is a mistake and it should be ZA.2060 because of the following two entries).
ZA.8486 CONDENSER, X.5, 5-kV., Mk. I ................each £ 0 8s 6d
.0005-uF.; 2,500-V., A.C., wkg.; wood case with ebonite cover; approx. 1.3/4-in x 2.1/2-in x 2-in.; fitted with 1 No. 2 B.A. terminal stem and 1 spring loaded insulated terminal; used with W.T. sets, MB/MC, complete stations, 1B and 1C when required.
ZA.2061 CONDENSER, X.5, 5-kV., Mk. I* ................each £ 0 8s 0d
.0005-uF.; 2,500-V., A.C., wkg.; wood case with ebonite cover; approx. 1.3/4-in x 2.1/2-in x 2-in.; fitted with 2 No. 4 B.A. terminal stem; used with Wireless. sets, No.2, complete stations, No. 2B and 2C; and Wireless sets, No. 7, complete stations, No. 7A
ZA.2062 CONDENSER, BOXES, CONTAINING
Ebonite; approx 3.1/8-in. x 3.3/8-in. x 4-in,; fitted with 1 terminal, brass, No. 2 B.A. on front; 1 terminal, spring, brass, special. with ebonite guard, 3-in. dia. on bottom and 1 M.S. plate with rubber washer to suit; used as aerial lead-in insulator on Tanks, light, Mks. II, IV and V; demands for replacements will state for which type of tank required.
... etc.
The "X.5" is the way the army used to specify condenser^W capacitor values; the letter is the multiplier and the figure(s) are the value. A subsequent letter identified the type /style - there is no rhyme nor reason to this scheme: letters were added as new components of that value came into service!
Multipliers:
No letter - it's the value in microfarads
P is .1 uF
Q is .01 uF
R is .001 uF
X is .0001 uF
Y is .00001 uF
Z is .000001 uF
Confused? You will be.