| 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.
Since Digikey no longer stocks the ICL7660 inverter, your next best bet is to get them from Mouser. The Mouser part numbers that will work are:
Mouser also stocks the CA3140, their part number is 570-CA3140AE.
Questions? Email us and we'll try to help you.