LM3909 – LED Flasher/Oscillator (pack of 5)


Available on backorder

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  • Finding flashlights in the dark, or locating boat mooring floats
  • Sales and advertising gimmicks
  • Emergency locators, for instance on fire extinguishers
  • Toys and novelties
  • Electronic applications such as trigger and sawtooth generators
  • Siren for toy fire engine, (combined oscillator, speaker driver)
  • Warning indicators powered by 1.4V to 200V

395.00 849.00 incl. GST

Available on backorder

The LM3909 is a monolithic oscillator specifically designed to flash Light Emitting Diodes. By using the timing capacitor for voltage boost, it delivers pulses of 2 or more volts to the LED while operating on a supply of 1.5V or less. The circuit is inherently self-starting, and requires the addition of only a bat-
tery and capacitor to function as an LED flasher. Packaged in an 8-lead plastic mini-DIP, the LM3909 will operate over the extended consumer temperature range of -25C to +70C. It has been optimized for low power drain and operation from weak batteries so that continuous operation life exceeds that expected from battery rating.
Package includes :
1 x LM3909 – LED Flasher/Oscillator (Pack of 5)

Operation over one year from one C size flashlight cell

Bright, high current LED pulse

Minimum external parts

Low cost

Low voltage operation, from just over 1V to 5V

Low current drain, averages under 0.5 mA during battery life

Powerful; as an oscillator directly drives an 8X speaker

Wide temperature range

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