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參數(shù)資料
| 型號： | DI 300 |
| 廠商： | SIEMENS AG |
| 英文描述： | Phase Switch-off Dimmer(相位轉(zhuǎn)換調(diào)光器) |
| 中文描述： | 相開關(guān)過調(diào)光器（相位轉(zhuǎn)換調(diào)光器） |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 466K |
| 代理商： | DI 300 |
Phase Switch-off
Dimmer DI 300
This new phase switch-off dimmer allows halogen lamps with step-down electronic
transformer, and also normal filament lamps and high-voltage halogen lamps, to be dimmed
and switched on or off at the press of a switch.
General
Halogen lamps enjoy great
popularity because they combine high
light output with low power consumption
and compact design, and nowadays are to
be found in almost every household.
As power must be supplied at
12V AC, the 230V mains supply must
first be stepped down to 12V by means
of a suitable intermediate transformer.
These step-down transformers may be
either conventional, i.e. with a toroidal or
iron core, or alternatively, and
increasingly often, electronic
transformers, characterized particularly
ELV journal 5/99
by an electronically regulated output
voltage and compact dimensions. Thanks
to their low profile, electronic
transformers are therefore ideally suited
for use, for example, in suspended
ceilings in bathrooms and living rooms.
Fig. 1
To control the
brightness, a dimmer
is inserted in series
before the transformer
If the brightness of the connected
lamps needs to be adjustable, a dimmer is
usually inserted in circuit between the
230V mains and the transformer; see
Figure 1.
Transformer
230 V
main voltage
Halogen
lamp
Dimmer
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