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Off line operated switch mode power supply suitable for Low Power He-Ne Laser Tube. This supply initially operates in a constant voltage mode giving stable high voltage necessary to trigger the tube and once the tube is triggered automatically it goes in-to constant current mode to give stable laser output. Provision is made for adjustable trigger voltage and adjustable constant current setting so that this supply can be used for different types of tubes having different power rating. System is made compact, light weight and efficient by adopting off line, high frequency, direct duty cycle controlled dc to dc converter technique.
SPECIFICATIONS
Suitable for He-Ne Laser (632 mm, Red) for laser output of 0.5 mw to 5 mw.
Trigger voltage
(constant voltage mode) |
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Adjustable from 5 kv to 12 kv.DC |
Output voltage
(Constant current mode) |
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3kv maximum. DC |
| Output current |
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Adjustable from 2mA to 8mA |
| Current regulation |
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Better than 0.1% for line variation of +/-15%
Better than 0.1% for load change of +/- 30% |
| Current ripple |
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0.5% (100Hz + 33 KHz spikes) peak to peak. |
| protection |
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O/P protected for overloads and short-circuit. |
| Efficiency |
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85% |
| I/P Voltage |
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230v AC, 50Hz |
| Operating frequency |
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33 KHz |
| O/P monitor |
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Output voltage and current monitoring points
provided on the panel (1V/10KV,1V/10mA) |
| Size |
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180mm X 180mm X
110mm |
| Weight |
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Less than 2 Kg |
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