| Reference Symbol | Description |
| CAPACITOR | |
| C1, C3, C4 | Electrolytic; 10uF; 25V |
| C2 | Electrolytic; 1uF; 50V |
| C5 | Disc; 220pF; X5F |
| DIODE | |
| CR1, CR2, CR7 thru CR10 | Silicon, signal, 1N4001 |
| CR3 thru CR6 | Zener; 7.5V; 1/2W |
| DS1 | LED; red, low current |
| JACK | |
| J1 | Receptacle; Power |
| P2 | 25 Position; Male "D" |
| P4 | 15 Position; Male "D" |
| TRANSISTOR | |
| Q1 thru Q3, Q5, Q7 | NPN; 2N3904 |
| Q4, Q6 | PNP; 2N3906 |
| RESISTOR | |
| R1, R3, R4, R7, R9, R10, | 4k7; 5%; 1/4W |
| R12, R13, R15, R16, R17 | 4k7; 5%; 1/4W |
| R2, R8 | 20k; 5%; 1/4W |
| R5 | 3k; 5%; 1/4W |
| R6 | 1k5; 5%; 1/4W |
| R11, R14 | 2k; 5%; 1/4W |
| R18 | 3k9; 5%; 1/4W |
| SWITCH | |
| SW1 | Toggle, SPST |
| IC | |
| U001 | 78L05 Voltage Reg. |
| U002 | ICL7660 Inverter |
| U003 | CA3140E |
| OTHER | |
| BT1 | Battery; 9V |
If you have problems finding specific parts, try searching on Mouser, Digikey, or Jameco.
Look kere for a Digikey parts list.
Here's some info on using an LM311 in place of the CA3140E.
Questions? Email us and we'll try to help you.