Parts Needed:
1 x 9V Battery
1 x Standard 3.5mm Male Plug (if plugging into a headphone jack like me)
1 x 100K Resistor 1/4W
1 x 22K Resistor 1/4W
1 x 470 Resistor 1/4W
1 x LED (or 2)
2 x General Purpose NPN Transistors (BC547 in my case. I had them lying around)
Below is the schematic with the input coming from one of the channels given by the 3.5mm plug:
2007-03-17 06:29:08 · 2 answers · asked by Anonymous in Consumer Electronics ➔ Other - Electronics
Can't help you, there's no link to your schematic.
2007-03-17 09:30:27 · answer #1 · answered by Houjo 4 · 1⤊ 0⤋
Connect a Capacitor something of 22uf and 16V parallel to the power supply
Also connect a disc capacitor to T1's base.
Connect resistor 330ohms to LED.
Connect Resistor of appopriate value to T1's collector to Gnd.
2007-03-19 07:35:58 · answer #2 · answered by kirk b 3 · 0⤊ 0⤋