Thermoelectric cooler power supply
and laser diodes matrix control unit
Thermoelectric cooler (TEC) power supply and laser diodes matrix (LDM) control unit PSC-120.2 ensure LDM temperature maintenance, pumping current pulses time parameters management and LDM PSL-120.1 power supply output current pulses amplitude measurement.
LDM has constant specified temperature because of current in TEC changes.
LDM pumping current pulses time parameters and operational temperature setup is done by build-in control items or by commands transferred from PC via serial port RS-485. LDM current pulses measured amplitudes and LDM temperature is displayed on build-in digital display and transfer to PC. Combined synchronous action of some power supply units is foreseen.
Characteristics of PSC-120.2
|LDM operational temperature, °С||+15 ... +25|
|LDM operation temperature maintenance discreetness, °С||0,1|
|LDM operation temperature measurement error, °С||0,1|
|LDM operation temperature long-term fluctuation, °С||0,2|
|Thermoelectric cooler maximum current, A||1,6|
|Thermoelectric cooler maximum potential drop, V||7,3|
|Thermoelectric fridge power supply efficiency factor
at maximum output current, not less than
|LDM pumping current pulses length range, us||60 ... 200|
|LDM pumping current pulses length discreetness, us||1|
|LDM pumping current cycle range, ms||10 ... 1000|
|LDM pumping current cycle discreetness, ms||1|
|Admissible ambient temperature without forced air cooling, °С||up to +40|
|Admissible ambient temperature with air cooling at V=0.1…0.2m/s, °С||up to +55|
|Overall dimensions, mm3||105х50х20|
Primary power source’s requirements
- Power supply at +58V: voltage deviation – not more than +5%, used pulsed current – not more than 10A, average used current – 130mA. It is recommended to use C-L-C ore active filter in this supply. In this case it is possible to decry supply voltage till +55V.
- Power supply at +12V: voltage deviation – not more than +10%, used pulsed current – not more than 0.1A, average used current – 60mA.
- Power supply at -12V: voltage deviation – not more than +10%, used current – not more than 15mA.