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VHF Engineering PS-15C, Instruction Manual

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VHF Engineering PS-15C Instruction Manual Download Page 1

Summary of Contents for PS-15C

Page 1: ...170 W A T k R ZT PO R O X 1971 RINGHAMTON NY 11902 607 721 9574...

Page 2: ...NTY Factory wired units are warranted for one year The unit must be re turned to the factory postpaid with a note describing difficulty and date of purchase include a check to cover return postage Our...

Page 3: ...300 330 ohm 570 2020175 390 ohm 5 PS15 2020180 3 3K 570 2020270 1 ohm 5W 2020010 Heat Sink Grease Capsule 3050200 P C Board 4040220 1 Heat Sink Small on PS3A PS15 4020100 Large on PS25 4020150 3 Keyst...

Page 4: ...consisting of R 1 2 and 3 times 1 6 The current limiter transistor saturates when a voltage of 6 is applied between pins 2 and 3 shuting down the output Therefore with a 1 ohm resistor for R 5 the sup...

Page 5: ...ssis before tightening the bracket 3 Mount the binding post on off switch and fuse holder as shown in the parts layout Mount the four rubber feet on the bottom corners of the chassis 4 Insert a rubber...

Page 6: ...following wires a Cut a 10 black 14 wire and strip both ends I1 b Cut a 5 black 14 wire and strip both ends 2 c Cut a 9 red 14 wire and strip both ends 2 d Cut a 6 red 18 wire Remove I of insulation...

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Page 9: ...lation off a 8 18 green wire about 3 118 from one end Strip 114 off each end Wrap the i bare section around the base lead lug of the right pass transistor socket and solder Connect the short end to th...

Page 10: ...r supply BEFORE APPLYING POWER CAREFULLY CHECK ALL SOLDER CONNECTIONS B INAL TEST AND ASSEMBLY 1 Install the fuse in the fuse holder 5 amp for 100V 3 amp for 220V 2 Set the voltage adjust control R 2...

Page 11: ...ity 7 Measure the voltage at the base of the pass transistor on the PS3 card This measurement can be made at the VO terminal a If no voltage is present proceed to step 10 b If 12 24 volts is present p...

Page 12: ...minals Be sure that the screws which hold the PS3 in place are tight 4 Check diode Dl for an open junction 5 j Check the solder connections between the transformer and rectifier 6 1 Be sure that the s...

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