Epson L90P - TM Two-color Thermal Line Printer Instrukcja Użytkownika Pobierz pdf (Strona 31)

microphone jack Ji and power switch

(if

used) at

the

other

end

of the

plastic

case.

If you use the microphone

called for

the

Parts List, mount an

appropriate jack

beside J1 for the

mi-

crophone- switch

output

plug.

After

the

perf board

is mounted on

the

metal

chassis, connect

it to the case -

mounted components.

Use shielded

lead

(Continued

on page 113)

broadcast -band

filter is

used

with the

marine

-band

converter

eliminate pickup from

strong

broadcast stations

that might

cause undesired breakthrough.

Applications booklet

for the

KD2117 series

gives

construc-

tion details

for

12 projects:

1/2-

audio

amplifier, crystal

cali-

brator,

crystal oscillator,

channel mixer,

flip

-flop,

power

supply, microphone

preampli-

fier, wide -band

amplifier,

wire-

less

microphone,

audio

oscilla-

tor, electronic

thermometer,

and

marine -band converter.

Photos

last

two are

shown here.

The

marine -band

converter pro-

vides

for reception of transmissions

on the

2 -to -3

-MHz

band

any con-

ventional

AM broadcast -band

radio.

Coupling is through

the antenna

input terminals on

BCB receiver.

Interior

of the

marine -band converter shows the

neat

construction that can be obtained.

Although it looks

like a PC board, this unit uses pert

-board wiring.

April, 1969

The electronic thermometer

described in

the

KD2117

applications

booklet measures from -58 to

+167

°F.

Various

temperature

sensing units can be

used.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 115 116

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