- 310 -
circuits. 1970. WITHDRAWN.
DD Spec 7.41.
to 100mA at
7. 77 .
Used in PS2/l6. CH1/l2B.
Transistors: OC83, OC28.
Output: 24V d.c., 2.2SA.
1963. DD Spec 4.13. ACO.
Part of MXl/S02.
Comprises PN3/23 with 3 PS2/lS, UNl/2S,
DD Spec 4.39.
Consists of 2 PS2/S03A and 2 PS2/l0 contained in PN3/23.
1963. DDHB 4.11. OBSOLESCENT.
Used with GE3/S0l to provide a stabilised d.c. bias,
variable from lOOV d.c. to 230V d.c. for a Ferranti
9/24DM cathode ray tube. CHl/12B. Output: 270V d.c. at
0.30mA stabilised (floating). Transistors: 2 OC3S, 2
OC20S, 2 2Nll3. 1963. DD Spec 11.6. WITHDRAWN.
Used to supply heater of a cathode ray tube. CHl/12A.
Output: 300mA d.c. stabilised. Transistors: 2 OC28, OC77,
OC140, OC203. 1963. DD Spec 11.7. WITHDRAWN.
Used with PA1/Sl3 and PA18/S08. Outputs: (a) +12V at
600mA, (b) -6V at lS0mA. CHl/12B, pegs 3, 23. 1963.
DD Spec 8.148. DDHB 8.lS0. ACO. OBSOLESCENT.
Improved version of PS2/2lB using circuit of PS2/22F.
Printed board only as in PS2/2IA-E used for mounting with
other equipment in CHl/12A. Superseded by PS2/9l, PS2/92
series. 1963. DDHB 7.68. ACO. WITHDRAWN.
Circuit and printed board identical with PS2/22B but with
long term stability and other performance parameters
improved. 1969. WITHDRAWN.
Supplies focus coil of vidicon in EP6/50l. Fed from
PSl/2. Used with GE4/SlS to modulate output with 2Sc/s
square wave for beam alignment. CHl/12A. Output: 220
DD Spec 7.SS.
DDTM 7.99. OBSOLESCENT.
Commercial unit mounted in CHl/12B to supply OS2/S03 in
GEl/S17. Output: l2.6V d.c. at 1.2SA maximum. 1963.
DD Spec 7.lS.
at up to 1.8A. CHl/12B.
DDTM 7.62. OBSOLESCENT.
Used with AMl/528.
(b) +18V d.c. up to
Outputs: (a) +llOV d.c. up to 200mA,
300mA. CHl/12B. 1963. DDHB 7.63.