GRAPHIC SYMBOLS USED ON SCHEMATIC AND BLOCK DIAGRAMS

BASIC COMPONENT SYMBOLS

VARIABLE RESISTOR (WIPER Moves TOWARD cw

WHEN SHAFT IS ROTATED IN A CLOCKWISE DIRECTION)

THERMISTOR

it ELECTROLYTIC CAPACITOR

CIRCUIT ASSEMBLY

BORDERLINE

HEAVY LINE WITH ARROWS INDICATES PATH AND DIRECTION OF MAIN SIGNAL

HEAVY DASHED LINE WITH ARROWS INDICATES PATH AND DIRECTION OF

MAIN FEEDBACK

‘=‘-b= FUSE

INDICATES A

MECHANICAL

CONNECTION

INDICATES A

SOLDERED

CONNECTION

-11

CAPACITOR

 

3

DIGITAL BUS

 

2

VARIABLE CAPACITOR

-o-fr

LIGHT-EMITTING

DIODE

I_

FEEDTHROUGH

CAPACITOR

-63

PIN DIODE

 

I-

 

 

 

 

 

 

 

-

FERROUS-CORE

INDUCTOR

 

TRIAC

 

 

 

 

 

 

+

SLUG-TUNED

INDUCTOR

 

STEP RECOVERY

DIODE

 

 

 

 

 

 

 

 

SURFACE ACOUSTIC

-@-WAVE (SAW)

A JUMPER WIRE

SW1

 

< ;k;-:k ;c”,;‘,, O

R

-@FERRITE BEAD

-4

@TEMPERATURE-COMPENSATED

J VOLTAGE-REFERENCE DIODE

RELAY(BOX OFTEN OMITTED)

SILICON CONTROLLED RECTIFIER (SCR)

@

(ALTERNATE RELAY)

INDICATES SHIELDING Q CONDUCTOR FOR CABLES

GROUNDED COAXIAL

8 SHIELDING

*INDICATES FACTORY SELECTED COMPONENT

3

TRANSISTOR. PNP

SW1

@

CRYSTAL

-1rlt

TRANSISTOR, NPN

@

SPEAKER

4

JUNCTION-FET. N-CHANNEL

+ GENERAL PURPOSE DIODEfa

PUSHBUTTON SWITCH

4 c NORMALLY CLOSED

SW1

-L- PUSHBUTTON SWITCH

a* NORMALLY OPEN

Ix AIR-CORE TRANSFORMER

 

 

 

 

JUNCTION-FET. P-CHANNEL

FERROUS-CORE

BREAKDOWN

DIODE

(ZENER)

TRANSFORMER

 

 

 

 

J

 

63

 

 

 

 

e-

 

 

 

 

 

SCHOTTKY

DIODE

 

 

MOS-FET. N-CHANNEL

MOS-FET,N-CHANNEL

 

 

DEPLET I ON MODE

49

 

 

 

ENHANCEMENT

MODE

 

@

 

 

 

 

 

 

 

VARACTOR

DIODE

 

 

MOS-FET. P-CHANNEL

MOS-FET.P-CHANNEL

it-

 

 

 

ENHANCEMENT

MODE

DEPLETION MODE

-B

 

@

 

 

 

 

 

 

 

 

 

 

 

 

Figure 5. Graphic Symbols (1 of 2)

General Information 11