Daitron PFS300A-30 Buku Petunjuk - Halaman 4

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2-8

Remote On/Off

・

This unit comes with an integral on/off circuit, see wiring

diagram below.

・

Unit DC output is disabled when control voltage is applied

to RC terminal in reference to –V terminal.

・

If SW is open or control voltage E is: 0 < E < 4.5V then unit

output is enabled.

・

If SW is closed and control voltage E is: 4.5VDC < E

< 6.5VDC then output is disabled, and no need for current

limiting resistor R.

・

If SW is closed and control voltage E is: 6.5VDC < E

< 24.5VDC, then current limiting resistor R must be =

(E – (1.1 +1000x0.005))/0.005. For example if E = 24VDC,

R = (24-(1.1+5))/0.005 = 3.5kΩ

2-9

Series Operation

・ This Daitron power supply unit is configurable in series

with another Daitron power supply (if it too is configurable

in Series) in order to increase DC voltage or to provide

both "+" and "–" DC voltage.

・ In these configurations the MAXIMUM current delivered to

the Load is limited to the maximum allowable from the

power supply with the lowest current rating.

・ To increase VDC (PS1 + PS2) see configuration (1) below.

Example: If PS1 and PS2 are both 12VDC/30W each, then

configuration (1) will provide 24VDC/30W

・ To provide both "+" and "–" DC voltage to a load see

configuration (2) below. Example: If PS1 and PS2 are both

12VDC/30W each, then configuration (2) will provide +12VDC

to Load1 and -12VDC to Load2, with a maximum total wattage

of 30W for both loads combined.

2-10

Parallel Operation

・

This power supply can not be configured in parallel with

another power supply.

負

2-11

Ripple

・ Maximum ripple voltage is measured using JEITA

measurement method prescribed in RC-9131C.

・ If ripple noise becomes excessive due to line length,

connect an electrolytic capacitor(47μF) and film capacitor

(0.1μF) at load side as shown.

The maximum ripple voltage in the standard specification is a value

measured using the specified measuring circuit in the anechoic

chamber under the JEITA measuring method (See the drawing).

When the load line is long, the ripple on the load edge may become

large unless a capacitor, such as an electrolytic capacitor or a film

capacitor is connected. The output ripple cannot be measured

accurately if the ground lead of the oscilloscope is too long.

Ta=25C Vin=100Vac, Typical value at the rated output

10001-005WE-00