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This simple circuit can provide hours of enjoyment as you learn tunes, play duets or just make some really weird sounds by pushing all the buttons at once.
You have probably seen this ciruit before, it is fairly common. I have seen it in several books. The best thing about the circuit is that you can tune each individual note, or go to a whole new octive by changing one capacitor (C1). Because of this, it is possible to from an entire Transistor Organ ensemble. Why you would want to do this is anyone's guess...
|
Part |
Total Qty. |
Description |
Substitutions |
| R1-R8 |
8 |
250K Trim Or Regular Pot |
|
| R9, R12 |
2 |
100 Ohm 1/4 W Resistor |
|
| R10 |
1 |
10K 1/4 W Resistor |
|
| R11 |
1 |
220 Ohm 1/4 W Resistor |
|
| R13 |
1 |
5K Pot |
|
| C1 |
1 |
0.01uF Capacitor |
|
| C2 |
1 |
0.1uF Capacitor |
|
| Q1 |
1 |
2N4891 Unijunction Transistor |
|
| Q2 |
1 |
2N2222 Transistor |
2N3904 |
| S1-S8 |
8 |
SPST Switch |
|
| SPKR |
1 |
8 Ohm 2 W Speaker |
|
| MISC |
1 |
Wire, Circuit Board, Knobs For Pots |
Content By http://www.aaroncake.net/circuits/torgan.asp
|
