111

RG

Spectrum analyzer

Measurement tool

NM type connector

50

Ω or 75 Ω

RG relay

40

1.575

40

1.575

A

70

2.756

1.5 dia.

.059

1.0 dia.

.039

2.5

.098

3.5

.138

70

2.756

PC board pattern

Expanslon of A

(1) Capacitor

Relay Ry

Capacitor

r

SW

E

(2) Diode

Relay Ry

Diode

SW

E

Test condition

1. Characteristic impedance of all the

measuring devices (signal genera-

tor and cable) is 50

Ω or 75Ω.

2. The PC board for the test is double

side copper clad phenolic paper

laminate with thickness of 1.6 mm.

3. Grounding terminal holes are plated

through.

4. Grounding terminal and one of the

coil terminals are soldered to the PC

board to be grounded.

5. Connection with measurement in-

strument is made with semi-rigid ca-

ble (Uniform Tube UT 141A) and

high frequency NM type connector.

NOTES

1. Soldering

Perform soldering under the condi-

tions below.

2. Counter voltage of DC relays

If input is cut off in DC relays, a

counter voltage is developed across

the coil as a result of the collapse of

the magnetic field. If the coil is used in

a transistor circuit, the reverse voltage

produced from the coil can cause a

serious circuit malfunction.

This counter voltage can be reduced

considerably by connecting a capaci-

tor or a diode in parallel with the coil.

The level of reduction must be deter-

mined either by calculation if the coil

data is available or by experiment.

3. Latching relay

In order to assure proper operating

regardless of changes in the ambient

usage temperature and usage conditions,

nominal operating voltage should be

applied to the coil for more than 40 ms to

set/reset the latching type relay.

For Cautions for Use, see Relay Technical Information (Page 48 to 76).

9/1/2000

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