1.5v One Battery LED Light Flasher Circuit Diagram

1.5v One Battery LED Light Flasher Circuit




>

1.5v One Battery LED Light Flasher Circuit Diagram

This will flash a LED, using a single 1.5V or 1.2V cell.

1.5v One Battery LED Light Flasher Circuit schematic

PARTS LIST
R1 100kΩ
R2 1kΩ
R3 47Ω
R4 10kΩ
C1 0.01µF (103)
C2 10µF
C3 100µF
Q1 BC547
Q2 BC557
D1 LED
BT1 1.2V or 1.5V Battery

It will even flash a white LED even though this type of LED needs about 3.2V to 3.6V for operation.

Note the R4 in series with LED charges the C3. It does not illuminate the LED. When the two transistors conduct, the collector of the Q2 rises to rail voltage and pulls the C3 high. The negative of the C3 effectively sits on top of the positive rail. All the energy (BT1 + C3) is pumped into the LED to flash.

The circuit takes about 2mA but produces a very bright flash.

You can adjust flash rate changing R1.

1.5v One Battery LED Light Flasher Circuit 1.5v One Battery LED Flashlight Circuit Diagram




Please send your ideas, which are very important for our success…

Tags:

Leave a Reply

Your email address will not be published. Required fields are marked *

*

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Electronic Circuits

LINKS

Enter your email address:

Electronics

Top