asked many times by many users over the years specially for the « chainsaw sound » with all the controls at max.
ICs, transistors and diodes used in the HM-2:
Here is the wiring diagram
Thank you.
ICs, transistors and diodes used in the HM-2:
- IC1-IC3: M5218L or NJM4558S (dual operational amplifiers)
- Q1,Q4,Q5,Q10: 2SK30A-Y (N-channel JFET transistors)
- Q2,Q3: 2SC732TM-GR (NPN silicon transistors)
- Q8,Q9: 2SC945-P (NPN silicon transistors)
- Q6: 2SC2240-GR (NPN silicon transistor)
- Q7: 2SA970-GR (PNP silicon transistor)
- D1,D3,D5,D8-D12: 1S2473 (switching diodes)
- D2: S5500G (400V/1A rectifier diode)
- D6,D7: 1S188FM (Germanium diodes)
- D13: RD5.1EB-3 (5.1V Zener diode)
- D14: SLP135B (red LED)
Here is the wiring diagram
Thank you.
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