White LED on 1.5 v Supply

In this post you will find circuit on how we can light up white LED on 1.5 v supply. Heart of the circuit is the transformer winded on 2.5mm by 0.5 mm core using 0.095 mm wire.

2 White LED on 1.5 v Supply

The circuit below uses only 1.5v to light up 2 white LED.

white-led-on-1-5-v-supply
 Components required:
  • T1 – BC338
  • R1 – 2.7 K
  • C1 – 10 n
  • D1,D2 – Super bright LED
  • Transformer – 60 T, 40 T
  • S1 – On/off Switch
  • Battery 1.5 V

White LED Flasher

Below circuit uses only 1.5v to flash a white LED.

white-led-flasher
Components required
  • T1 – BC338
  • T2 – 2N2222
  • R1 – 2.7 K
  • R2 – 47 R
  • R3 – 330 R – 1K
  • C1 – 10 n
  • C2 – 100
  • D2 – 1N4148
  • Battery 1.5 v

For more post on LED click here.

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