Tutorial Reference # 137
Title: Transistor Organ
Language: Electronics
Description: Make you own music with this circuit.
Author: devilson
Added: July 29, 2007, 9:58 pm
Rating: Not rated
# You can tune the organ to any instrument by adjusting R1-R8. I used a clarinet to tune mine, but you can of course use any instrument you wish.
# The circuit may drain a 9V battery fairly quickly at full volume. You may remove R11 for even more sound.
# You can rig up a relay and a foot switch to change C1 (for a different octive) while your playing.
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 or 2N3904
S1-S8 8 SPST Switch
SPKR 1 8 Ohm 2 W Speaker
MISC 1 Wire, Circuit Board, Knobs For Pots
Found at http://www.aaroncake.net/circuits/torgan.asp
Language: Electronics
Description: Make you own music with this circuit.
Author: devilson
Added: July 29, 2007, 9:58 pm
Rating: Not rated
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# You can tune the organ to any instrument by adjusting R1-R8. I used a clarinet to tune mine, but you can of course use any instrument you wish.
# The circuit may drain a 9V battery fairly quickly at full volume. You may remove R11 for even more sound.
# You can rig up a relay and a foot switch to change C1 (for a different octive) while your playing.
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 or 2N3904
S1-S8 8 SPST Switch
SPKR 1 8 Ohm 2 W Speaker
MISC 1 Wire, Circuit Board, Knobs For Pots
Found at http://www.aaroncake.net/circuits/torgan.asp