Tunable Transistor Organ Circuit
Topics: Sound Circuits / Sound Effects
A simple electronic circuit that you can use to play tunes.. because it's a transistor-based electronic organ
This is a cool schematic for a circuit that uses a total of 3 transistors to create organ sounds. The circuit diagram includes instructions for how to tune the sound frequencies that the circuit plays. There are a total of either buttons that play sounds!
It's also possible to hook up a foot pedal via. relay so that you can change the circuit's octave during a session. the circuit operates on 9 Volts DC, however it can draw significant current at full volume, so it may be advisable to used a smoothed and regulated DC power supply instead of a battery if you want to run this at full volume!
Component Values:- R1-R8 - 250K Trim Or Regular Pot
- R9, R12 - 100 Ohm 1/4 W Resistor
- R10 - 10K 1/4 W Resistor
- R11 - 220 Ohm 1/4 W Resistor
- R13 - 5K Pot
- C1 - 0.01uF Capacitor
- C2 - 0.1uF Capacitor
- Q1 - 2N4891 Unijunction Transistor
- Q2 - 2N2222 Transistor or 2N3904 Transistor
- S1-S8 - SPST Switch
- SPKR - 8 Ohm 2 Watt Speaker
- MISC - Wire, Circuit Board, Knobs For Pots
- Transistor Organ
- Electronic Organ Circuit
- Transistor Organ Schematic
- Organ Circuit
- Organ Circuits
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