PCBs
djarky
Various PCBs
Components (13)
| Reference | Value | Description |
|---|---|---|
| Q1,Q2 | NPN | Bipolar transistor symbol for simulation only, substrate tied to the emitter |
| U1 | NE555P | Precision Timers, 555 compatible, PDIP-8 |
| U2 | 4017 | Johnson Counter ( 10 outputs ) |
| BT1 | Battery | Multiple-cell battery |
| C1 | C_Polarized | Polarized capacitor |
| D1 | LED | Light emitting diode |
| D2 | D | Diode |
| K1 | Relay_DPDT | Relay, SPDT Form C, vertical mount, 5-60V coil, 6A, 250VAC, 28 x 5 x 15mm |
| M1 | Microphone | Microphone |
| R1 | 10K | Resistor, US symbol |
| R2,R4,R5,R7 | 1K | Resistor, US symbol |
| R3,RV1 | 100K | Resistor, US symbol,Trim-potentiometer |
| R6 | 330 | Resistor, US symbol |