Jul 08

Multi-Mode RX423PC Musical Bell

Musical Bell3-schematic-diagram

Multi-Mode RX423PC Musical Bell Circuit Schematic Diagram

Musical Bell3-circuit

Multi-Mode RX423PC Musical Bell Board and Components Layout

Parts List

Resistor :

  • R1 ……………………………. 820K
  • R2 ……………………………… 47K
  • R3 ……………………………. 330K
  • R4 …………………………….. 180K
  • R5 …………………………….. 100K
  • R6 ………………………………. 15K
  • R7 ………………………………. 10K
  • R8 ……………………………… 10M

Variable Resistor :

  • VR1,VR2 ……………………… 100K

Capacitor :

  • C1 ……………………………….. 33pF
  • C2,C3 …………………………. 150pF
  • C4 ………………………………. 0,1uF
  • C5 ……………………………….. 10uF
  • C6,C7 …………………………… 47uF
  • C8 …………………………….. 0,47uF

Transistor :

  • TR1 ………………………… FCS 9012
  • TR2 ………………………… FCS 9013

Integrated Circuit :

  • IC1 ………………………….. RX423PC

 

  • S1   :   A. Auto stop; B. Repetitive – Non-stop.
  • S2   :  C. 8 songs in a row ;  D. Only one song.
  • S3   :  Song changes on every button press.
  • S4   :  Start.