Roff Well-Known Member Jan 17, 2008 #1 I haven't tried this, but you LED aficionados might want to. **broken link removed**
Hero999 Banned Jan 19, 2008 #2 I bet the piezo transducer makes a horrible noise. What's wrong with the Joul thief? It probably costs less and is more efficient. The only time I'd do it this way is if I wanted to power a piezo buzzer and an LED at the same time from a 1.5V cell which is never.
I bet the piezo transducer makes a horrible noise. What's wrong with the Joul thief? It probably costs less and is more efficient. The only time I'd do it this way is if I wanted to power a piezo buzzer and an LED at the same time from a 1.5V cell which is never.
RODALCO Well-Known Member Jan 19, 2008 #3 Google for Joule Thief as Hero999 said. Simpler and works very well. 1.5 Volt battery will still light LED at < 0.4 Volts
Google for Joule Thief as Hero999 said. Simpler and works very well. 1.5 Volt battery will still light LED at < 0.4 Volts
mvs sarma Well-Known Member Jan 20, 2008 #5 This can perhaps be useful as a turn signal indicator for Bicycles, where the buxzzer ensures that the signal is switched ON.
This can perhaps be useful as a turn signal indicator for Bicycles, where the buxzzer ensures that the signal is switched ON.