SCR Lamp Flasher

SCR Lamp Flasher

Product Code : JL-PET-1429

SCR Lamp Flasher

  • Power Electronic Training Board has been designed specifically to study the use of SCR and TRIAC in D.C. and A.C. lamp flasher respectively.
  • The flasher is useful for students of understand the application of SCRs in D.C. flasher, triggered by UJT relaxation oscillator.
  • The repetition rate of the flasher can be varied by varying the frequency of the relaxation oscillator.
  • This Training Board also makes use of the same SCR D.C. flasher for making the TRIAC ON and OFF in the A.C. power circuit which operates a normal 230V incandescent lamp used as load.
  • Practical experience on this board carries great educative value for Science and Engineering Students.    


To perform the following experiments:

  • Symmetrical D.C. flasher
  • High power A.C. flasher


The board consists of the following built-in parts:

  • 12V D.C. at 100mA, IC Regulated Power Supply
  • Two SCRs
  • TRIAC 4 Amp./400PIV
  • 230V/40 Watt lamp for load
  • UJT 2N 2646 in relaxation oscillator mode
  • Two LEDs to demonstrate Twin-lamp D.C. flasher
  • Potentiometer for frequency variation
  • Two numbers of toggle switches, one for D.C. flasher, and one for A.C. flasher
  • Adequate no. of other Electronic Components
  • Mains ON/OFF switch, Fuse and Jewel light
  • The unit is operative on 230V ±10% at 50Hz A.C. Mains
  • Adequate no. of patch cords stackable 4 mm spring loaded plug length ½ metre
  • Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections/ observation of waveforms
  • Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References
  • Weight : 5 Kg. (Approx.)
  • Dimension : W 412 x H 150 x D 310

Other Apparatus Required:

  • Digital Multimeter 3¾ digit - Order Code 16901
  • Dual Trace Cathode Ray Oscilloscope 20MHz (Unearthed)


  • Specifications are subject to change

Other Information:

Pay Mode Terms: 

  • T/T (Bank Transfer)

Port of Dispatch: 

  • India

Delivery Time: 

  • 4 weeks

Packaging Details: 

  • Corrugated Box

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Office Address

Jain Laboratory Instruments Pvt. Ltd.
Hargolal Road, Ambala Cantt,
Haryana India


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