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Projecttitel: MFOS Volt per Ocatve Calibrator

Status:  CANCELED  but pcb finished

Startdate: Aug.2013

Duedate: December 2014

Manufacture link:

Features (Source: MFOS)

  • Variable Cycle Rate
  • 0V thru 3V and 0V thru 7V settings
  • Very accurate when resistors are hand selected to 0.1%
  • Facilitates calibration of Volt Per Octave modules.

BOM (source mfos)


1  CD40106  CD40106  U1  
1  CD4520 Dual Binary Counter  CD4520  U2  
2  TL071 Op Amp  TL071  U3, U4  
2  Diode 1N914  VALUE  D1, D2  
1  Diode Zener  1N5239B  Z1  
2  Cermet Multiple Turn Trim Pot  100K  R14, R16  
1  Cermet Multiple Turn Trim Pot  10K  R10  
1  Linear Potentiometer  1M  R11  
2  Resistor 1/4 Watt 1%  1.5K  R15, R17  
2  Resistor 1/4 Watt 1%  100K  R7, R9  
5  Resistor 1/4 Watt 1%  200K  R3, R4, R6, R8, R13  
1  Resistor 1/4 Watt 1%  20K  R5  
2  Resistor 1/4 Watt 5%  10K  R1, R20  
1  Resistor 1/4 Watt 5%  1K  R2  
2  Resistor 1/4 Watt 5%  20K  R12, R19  
1  Resistor 1/4 Watt 5%  220K  R18  
4  Capacitor Ceramic  .1uF  C3, C4, C6, C7  
2  Capacitor Ceramic  .22uF  C5, C9  
2  Capacitor Electrolytic  10uF  C2, C8  
1  Capacitor Electrolytic  220uF  C1  
2  Switch SPST  SPST  S1, S2  
1  Switch SPST N.O. Push Button  SPST  S3  
1  Jack 1/4" 2 Terminal  Jack 1/4" 2 Terminal  J1  



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