Shure WL83 Spezifikationen PDF herunterladen (Seite 16)

BATTERIES

Careful transmitter battery selection, installation, use

and care will help avoid problems in wireless

microphone use. The most dependable, long-lived bat-

teries at this time are the manganese-alkaline, or

alkaline, types. In addition to offering the longest ex-

pected operating life, they are commonly available.

One small word of caution about alkaline batteries:

they are not all the same size. Make certain the battery

The battery should be removed if the transmitter

malfunctions, or if it is to be stored for a long period.

Most batteries have a protective jacket, but partly or

completely exhausted batteries are more prone to

leakage.

Do not attempt to recharge replaceable (primary) bat-

teries using “chargers”, heat or other methods. This may

cause leakage or explosion. Do not disassemble bat-

you buy will make contact inside the battery compart-

teries or dispose of them in fire.

ment.

Nickel-cadmium (nicad) batteries can save money

through their rechargeability, but the tradeoff is in

shorter expected life per charge. In addition, forgetting

to recharge can be disastrous.

BATTERY TYPE

Another major consideration in nicads is that of

operating voltage. The “heavy-duty” 8.4-volt nicads are

satisfactory for transmitter use, but the “9-volt-size”

nicads commonly found in stores are only 7.2 volts and

will not provide satisfactory wireless performance.

Alkaline

Mercury batteries in the “9-volt-size” are also actually

8.4 volts. However, their discharge characteristics are

such that they will yield between 10 and 15 hours of

operation with the transmitter.

Carbon-zinc batteries are the least useful for transmit-

ter operation. Their low cost is more than offset by their

extremely short operating and shelf life. Although the

“heavy-duty” (HD) carbon-zinc types offer better low-

temperature performance and service capacity at

moderate to high current drain, they will not offer ap-

preciably better transmitter performance than standard

carbon-zinc batteries.

Mercury

Although battery operation is inhibited at low

temperatures, storing batteries at low temperatures will

increase their shelf life. They should be sealed in bags

and, when ready for use, allow to warm up to room

temperature (never heated!). Cold-stored batteries

should be used as soon as possible after bringing to

room temperature.

Nickel-Cadmium

Carbon-Zinc

Battery life is shortened by high-temperature storage

such as on amplifiers or in vehicles exposed to direct

sunlight.

RECOMMENDED RANGES

Carbon-Zinc

(Heavy Duty)

Carbon-

Alkaline Mercury Zinc

Temperature 0° to 38°C

4° to 54°C 7° to 32°C

(32° to 100°F) (40° to 130° F)

(45° to 90° F)

Shelf Life (room 30 months

30 months

6 to 12

temperature; to months

80% of capacity)

Nicad

-20° to 45°C

(-4° to 113°F)

10 to 80 days

MANUFACTURER

& NO.

Bright Star 7590

Duracell MN1604

ESB A1604

Eveready 522

IEC 6LF22

NEDA 1604A

Panasonic 6AM6

Radio Shack

23-553

Ray-O-Vac A1604

U.S. Military

BA3090

Varta 4022

Burgess H146X

Duracell TR146X

Eveready E146X

NEDA 1604M

Panasonic TR146

U.S. Military

BA1090/U

SAFT PS-9

Varta TR7/8

Duracell M1604

Eveready 216

Ray-O-Vac 1604

Radio Shack

23-464

Duracell

M1604HD

Eveready 1222

Ray-O-Vac D1604

Radio Shack

23-583

VOLTS

EXPECTED LIFE

9.0

8.4

9.0

6 to 7 hours

10 to 15 hours

1-1/2 to 2 hours

per charge

1 hour

1 2 ... 11 12 13 14 15 16 17 18 19 20

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