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
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
Read More Source: http://www.aaroncake.net/circuits/torgan.asp Thank you.
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This entry was posted on Saturday, February 9th, 2008 at 9:55 am and is filed under Audio - Alarm, oscillator generator.
