Simple detector board for SBM-20 or STS-5 Repository contains electrical circuit and Gerbers files.
Technical Specifications:
• Geiger Tube PCB Compatibility: STS-5, SBM-20, SI3-BG
• Geiger Tube Voltage Compatibility: 350V-450V
• Supply Voltage: 9V Battery
• Supply Current: 6.5mA
• PCB Dimensions: 115 x 75 mm
• Piezo Sound Indication
• Led Indication
• Easy High Voltage Adjustments with a regular 1M/10M Multimeter
Components List:
Resistors:
R1 – Carbon Film Resistor 220K (red, red, yellow, gold) R2 – Carbon Film Resistor 330R (orange, orange, brown, gold) R3 – Carbon Film Resistor 3.9K (orange, white, red, gold) R4, R13 – Carbon Film Resistor 100K (brown, black, yellow, gold) R5 – 1% Metal Film Resistor 1M (brown, black, black, yellow, brown) R6 – 1% Metal Film Resistor 4.7M (yellow, violet, black, yellow, brown) R7 – Carbon Film Resistor 1.5K (brown, green, red, gold) R8, R10 – Carbon Film Resistor 470K (yellow, violet, yellow, gold) R9 – Carbon Film Resistor 27K (red, violet, orange, gold) R11 – Carbon Film Resistor 1K (brown, black, red, gold) R12 – Carbon Film Resistor 18K (brown, gray, orange, gold ) R14,R15,R16,R17,R18,R19,R20,R21,R22,R23 – 1% Metal Film Resistor 10M (brown, black, black, green, brown) P1 – Variable Resistor Potentiometer 3296W 100 ohm
Capacitors:
C1, C9 – Ceramic Disc Capacitor 100nF 50V (104) C2, C4 – Electrolytic Capacitor 10uF C3 – Multilayer Ceramic Capacitor 1nF 50V (102) C5, C6 – Multilayer Ceramic Capacitor 10nF 1KV (103) C7 – Ceramic Disc Capacitor 330pF 50V (331) C10 – Mylar Film Capacitor 22nF 50V (223)
Semiconductors:
D1, D3, D4, D5 – 1n4148 Small Signal Diode D2 – UF4007 Ultra Fast Diode T1 – KSP44 High Voltage NPN Transistor T2, T3 – 2N3904 Generic NPN Transistor TS555CN – CMOS 555 Timer IC SN74HC14N – HEX Inverting Schmitt Trigger IC LED1 – 3mm Super Bright Red Led Inductor: L1 – 10mH Inductor
Other:
1pcs Piezo Buzzer 22mm 1pcs black wire for PCB link 1pcs 9V Battery Holder for PCB 4pcs Fuse Holder Clips 1pcs 8 Pin DIP IC Socket 1pcs 14 Pin DIP IC Socket 1pcs Slide Switch On/Off 8pcs of Male Pin Header Pins 2pcs Jumper Cup 2pcs M2 Screw 2pcs M2 Nut 4pcs M3 Standoff 4pcs M3 Screw