Ehrhorn Technological Operations ALPHA 76A Скачать руководство пользователя страница 19

16

SECTION  6  - -   STANDARD  ELECTRICAL  PARTS

SYMBOL

DESCRIPTION

SYMBOL

DESCRIPTION

B1

Cl,  C2 

C3-C6

C9,C14 ,C15 

Cl 7

Cl 01-Cl 06

Cl 08

Cl 09 

C201

C202

C203

C206

C209

C210

Howard  #3-90-8507

.002uf/lKV  disc  ceramic

.002uf/3KV  d isc   ceramic

.02uf/lKV  disc  ceramic

2  each  .002uf/6KV  disc
180uf/450V  computer 

grade  e le c t r o ly t ic

500uf/50V  e le c t r o ly t ic

15uf/20V  tantalum 

18pf/lKV  disc  ceramic

2-8pf  a i r   trimmer

300pf  dipped  s i l v e r   mica

10uf/50V  e le c t r o ly t ic

27pf  dipped  s i l v e r   mica 

lOOpf  dipped  s i l v e r   mica

Capacitors  not  lis t e d :   .01uf/50V  disc

3KV  PIV/0.5A  CCS  (RCC  1733)

1N4757  (51V/1W  zener)

1N4722  or  1N5404 

1N4733  (5.1V/1W  zener) 

1N4148  or  1N914B 

Diodes  not  lis t e d :   1N4004  or  equivalent

D101 -D104

D105

D106

D110

D201-D203

FI  ,F2

10A/250V,  3AB  or  ABC  types 

(76CA  only,  15A)

F3

1-1/2A,  s lo - b lo   type  MDL

11-14

GE  #85  push-in  lamp

K1

*

DPST/120VAC  c o i l ,   Guardian 

1390-2C-120A  or  equivalent

K2

DPST/24VDC  c o i l ,  Guardian 

1395-2C-24D  or  equivalent

K3

KV  relay,  24  VDC  coil  ;  P-B 

PRD11DY0-24  or  equivalent

K4

DPDT/10A,  24VDC  coil*,  Mag- 

necraft  W88  or  equivalent

K6

5VDC  c o i l ,  form  A  contacts

K7

24VDC  coil  ,  SPST  N.O.

L1-L3

L8

L202

Q101 

Ql 02

Q1 03 

Ql 04

1 5uhy/lA  r f   choke 

1  to  2.5  mhy  r f   choke 

1  mhy  miniature  rfc

2N6027  P.U.T.

2N5061  S.C.R.

2N5307  Darlington  NPN

2N3904  NPN  or  equivalent

RESISTORS:  All  are  1/4  watt,  5% 
composition  or  film  as  shown  on 
schematics  unless  otherwise  sp e ci­
fied  below.

R1  ,R2 
R4

10  ohm/12W  wirewound 

1 OK  ohm/  12W  wirewound

R107-R109  1 M/l %  3/4W  precision

R i l l

25  ohm/25W  wirewound

R205-R209  5K  trimpot,  lin e a r   taper

SI

S2-S4

S5

Central ab  JV9034  modified 

8  station  special  a s s ' y

Microswitch  V3L-4-D8  or 

equival ent

V1,V2,V3 

Eimac  type  8874

ALL  COMPONENTS  SUBJECT  TO  CHANGE  WITH­

OUT  NOTICE. 

COMPONENTS  NOT  LISTED  ARE 

SPECIALS  AVAILABLE  THROUGH  ETO. 

PLEASE 

SPECIFY  MODEL  AND  SERIAL  NUMBER  OF 
AMPLIFIER,  PLUS  CIRCUIT  SYMBOL  OR 

DESCRIPTION  AS  ABOVE  WHEN  ORDERING 

REPLACEMENT  PARTS.

1279

Содержание ALPHA 76A

Страница 1: ...OPERATING AND TECHNICAL M ANUAL HIGH FREQUENCY LINEAR POWER AMPLIFIERS ALPHA 76A 76PA and 76CA 0 E H R H O R N T E C H N O L O G IC A L O P E R A T IO N S IN C CA ON CITY COLORADO 81212...

Страница 2: ...kW i n p u t 6 Operating notes 7 Troubleshooting hints 8 SECTION 4 THEORY OF OPERATION 9 SECTION 5 ILLUSTRATIONS 11 Transformer access and location 11 Rear panel view of amplifier 11 Top view showing...

Страница 3: ...all the 1 4 20 bolts and washers provided and tighten Check both pairs of connectors visually for proper mating orientation avoid excessive harness bending or twisting as it may cause damage to wires...

Страница 4: ...dition with no short across its RELAY line the RF OUTPUT connector is internally connected d i rectly to the RF INPUT providing normal transceive type antenna input to the receiver ALC For use with tu...

Страница 5: ...ll scale CM Selects lower plate voltage optimum for CW FSK SSTV and other types of emission including SSB up to 1 kW d c plate input SSB Selects high plate voltage for up to 2 kW PEP SSB plate input O...

Страница 6: ...une up should be to set excitation drive from the exciter or transceiver so that the GRID current meter indication just reaches about 50 mAdc 1 3 scale key down or on SSB voice peaks b INITIAL TUNE UP...

Страница 7: ...is required for CW FSK SSTV operation except to check exciter r f output under operating conditions to insure that plate current is as desired Also press GRID and check that grid current does not exce...

Страница 8: ...120V operation Standard glass fuses of the same size are rated for circuits up to 32 V only and may shatter or explode within the fuse holder The slo blo fuse F3 located just behind the front panel p...

Страница 9: ...ply D107 D108 or Cl08 or HV fault Defective reed relay K6 Defective Q101 Q102 or Cl09 R116 open or damaged Bias zener DUO damaged or open R116 damaged or open grid current will indicate very high as i...

Страница 10: ...i e the threshold ALC level is set by rear panel potentiometer R209 which appropriately back biases D203 Relay K4 switches the antenna straight through to the exciter when the ampli fier is OFF or in...

Страница 11: ...comes more positive than its gate At that point Q101 turns on abruptly triggering SCR Q102 which activates relay K6 Until K6 closes the amplifier is locked in the STANDBY condition since T R relay K4...

Страница 12: ......

Страница 13: ...12...

Страница 14: ...TO POWER SUPPLY...

Страница 15: ...tHRHORN TECHNOLOGICAL OPERATIONS INC I MODELS PA 76A 76P CA ON C I T Y CO 8 1 2 1 2 DRAWING ALC WATTME...

Страница 16: ......

Страница 17: ......

Страница 18: ...N O T E S ALL I N T E R F ALL R ES IS TO...

Страница 19: ...90 2C 120A or equivalent K2 DPST 24VDC c o il Guardian 1395 2C 24D or equivalent K3 KV relay 24 VDC coil P B PRD11DY0 24 or equivalent K4 DPDT 10A 24VDC coil Mag necraft W88 or equivalent K6 5VDC c o...

Отзывы: