AMERITRON AL-1500 Gebruiksaanwijzing - Pagina 7

Blader online of download pdf Gebruiksaanwijzing voor {categorie_naam} AMERITRON AL-1500. AMERITRON AL-1500 16 pagina's. Full power linear amplifier

Caution: This page is only valid for transformers that contain these exact color codes for the primary winding. Early

production units did not contain a multiple tap transformer. If the terminal strip has all these color coded wires, then the

unit has the multiple tap transformer.

FILAMENT/BLOWER WIRING INSTRUCTIONS

The AL-1500 and 1500(X) amplifiers come prewired for 240V line voltage and with the blower prewired for medium

high fan speed. NOTE: The AL-1500J Japanese export model is prewired for 208V line voltage. This page gives filament

transformer connection details for various line voltages and blower speeds. The five lug terminal strip and the single lug

terminal strip are located immediatgly behind the ON/OFF rocker switch inside the unit. The drawing below shows the

connection of transformer leads and their purpose.

This chart shows the color code of the transformer leads and their purpose. The number in paren-

thesis indicates the number of the terminal lug that the transformer lead is connected to. The

number three (3) lug is not used to change the filament or blower wiring. Do not add or remove any

wires from the number three (3) lug. Refer to the drawing above. Use the lug numbers above when

referring to both of the Filament connection chart and the Blower connection chart below.

FILAMENT TRANSFORMER LINE VOLTAGE T

are two wires that connect to the terminal lugs which

determine the Filament Line Voltage. The BLACK wire

from the power switch and WHITE wire from rear of the

unit connect to different terminal lugs depending on the

voltage desired. The AL-1500 and 1500(X) come prewired

for 240V operation*. AL-1500J comes prewired for 200V

operation**. Refer to the chart below. The voltage listed in

the chart below is the maximum line voltage that should be

applied to a given tap. Operation with line voltage in

excess of 'he tan voltage selected can result in a reduction

of tube life

ere

BLOWER CONNECTIONS

The GREEN and WHITE wires from the rear of the unit

connect to the terminal lugs to control the air speed of the

fan. The AL-1500/X/J are prewired for the medium high

speed setting*. Refer to the char below. The blower

connections can be moved to lower speed taps if air noise

is excessive. Ameritron recommends using the highest

speed tap that noise considerations permit. The lowest

speed tap will develop sufficient air flow for standard

amateur SSB and CW full power operation. The highest

speed taps should be used for contest or RTTY operation.