Telkoor Advice

Capacitor Chargers

Telkoor Capacitor Charging Power Supplies


Telkoor Power Supplies is a technical leader in switching power supplies for over 40 years.

Telkoor designed a family of capacitor chargers for pulsed laser applications,

(medical and aesthetic treatment) in the range 1500 / 2200W that provide high - efficiency,

fast response along with low EMI with no additional line filter required.

Main Features:


  • Ideal for OEM Laser manufactures 
  • Low EMI  
  • High Efficiency 
  • Meets EN 55011 Conducted & Radiated Class A. 
  • Fully protected for over-load, short circuit, over voltage over temperature.  
  • Load Fault Watchdog Timer can be modified upon customer request. 
  • Meet EN60601-1 
  • Can be modified upon customer request (voltage and output Power)

Advantages over exist chargers:


Telkoor capacitor chargers are a new design using the

Standard modular platform 12.7”x5.7”x4.1” that provide:


  • Higher efficiency around 8% over the exist chargers, (reduced temperature rise, increased reliability). 
  • Function at higher frequency and 50% duty cycle, (Fast response, less noise).
  • Shut down if the output voltage is equal or less than 80% of its maximum rate for more than 5 second (higher charge discharge cycle).
  • Fully isolated input to output (can be connected directly to the AC line).
  • Can provide per request up to 3KW using the standard platform. 

Telkoor Standard Capacitor Chargers 
Model Poutmax Voutmax Input Voltage Input Current Size (L*W*H)
PS-1700 1500J/Sec 500 V 90-264 VAC 15A @ 115V 12.7"*5.75"*4.1"
PS-1710 1500J/Sec 600 V 90-264 VAC 15A @ 115V 12.7"*5.75"*4.1"
PS-1720 1500J/Sec 700 V 90-264 VAC 15A @ 115V 12.7"*5.75"*4.1"
PS-1730 1500J/Sec 750 V 90-264 VAC 15A @ 115V 12.7"*5.75"*4.1"
PS-1740 1500J/Sec 800 V 90-264 VAC 15A @ 115V 12.7"*5.75"*4.1"
PS-1750 1500J/Sec 1000 V 90-264 VAC 15A @ 115V 12.7"*5.75"*4.1"
PS-2250 2200J/Sec 500 V 180-264 VAC 15A @ 220V 12.7"*5.75"*4.1"
PS-2260 2200J/Sec 600 V 180-264 VAC 15A @ 220V 12.7"*5.75"*4.1"
PS-2270 2200J/Sec 700 V 180-264 VAC 15A @ 220V 12.7"*5.75"*4.1"
PS-2275 2200J/Sec 750 V 180-264 VAC 15A @ 220V 12.7"*5.75"*4.1"
PS2280 2200J/Sec 800 V 180-264 VAC 15A @ 220V 12.7"*5.75"*4.1"



















Product Specifications:



  • Input Voltage: 90-264Vac 47-63Hzfor 1500J/Sec
  • 180-264Vac 47-63Hz for 2200J/Sec
  • Power Factor:0.99 typical
  • Inrush Current:< 25A @ 220Vac 


  • Output Power : PS-17XX 1500J/Sec
  • PS-22XX 2200J/Sec
  • Output Voltage : Configurable from 500Vdc to 1KV
  • Polarity :Positive
  • Efficiency :> 88% and maximum load
  • Regulation:0.5% @ 100Hz. 


  • Connector :15Pin D-Type
  • Voltage Program:0-10V for 0 to Max. Voltage
  • Voltage Monitor
  • Inhibit
  • End of charge status
  • Over Voltage/Temperature fault


  • Operation Temperature: 0°C to +40°C ,
  • Storage :- 20°C to +85°C
  • Humidity :Operating 10-90%RH,Storage 10-95%RH
  • Cooling : Internal fans
  • Safety: EN60601-1and CE Mark
  • MTBF: 500000 hours minimum °C 


  • Size:(W x H x D ) 12.7" x 4.1" x 5.75"


  • Leakage Current :< 300uA
  • Isolation :4000VAC / 5700VDC
  • EMI : EN55011 Class A Group 1


PS-1700/2200 Series- Outline Drawing



Principle of operation

The capacitor charger tested as a charger that defined by charge time to charge a specific capacitor to requested voltage.

The capacitor charger has a three mode of operation as shown below


The rate of which the capacitor is charged and discharged is called the repetition rate , T , and may vary from 0.01Hz for large capacitor banks to a few KHz .

A capacitor charging has two power rating expressed in Joule per second (J/S)

The peak power rating is used when calculate the charge time and the average power is used to determine the maximum repetition rate.

The charge time calculated by using the formula:



T (second) =




T = Charge time in second

C = Capacitor in farads

V = Charge voltage require

Ppeak = Unit peak power (J/S)


The average output power depends on the discharge mode energy and repetition rate of the load.

P (average) (J/S) = Wload / T

T= repetition rate .

w= energy delivered per charging cycle.


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