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Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 13 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×1 | 100R | 100 | BC108B collector to 2N3702 base; read from the schematic by eye | |
| ×1 | 22k | 22k | pushbutton to timing node; read from the schematic by eye | |
| ×1 | 100k | 100k | timing node to BC108B base; read from the schematic by eye | |
| ×1 | 47k | 47k | BC108B base to ground; read from the schematic by eye | |
| ×1 | 56R | 56 | in series with speaker; read from the schematic by eye | |
| Capacitors 3 | ||||
| ×1 | 22n | 22n | feedback, 2N3702 collector to BC108B base; read from the schematic by eye | |
| ×1 | 10u | 10u | electrolytic, rise/fall timing; read from the schematic by eye | |
| ×1 | 2u2 | 2.2u | electrolytic, across speaker branch; read from the schematic by eye | |
| Transistors 2 | ||||
| ×1 | BC108B | BC108B | NPN; read from the schematic by eye | |
| ×1 | 2N3702 | 2N3702 | PNP; read from the schematic by eye | |
| Switches 2 | ||||
| ×1 | SPST | SPST | momentary pushbutton, charges the 10u to sweep the pitch; read from the schematic by eye | |
| ×1 | SPST | SPST | power switch; read from the schematic by eye | |
| Other 1 | ||||
| ×1 | 8 ohm | 8 OHM | speaker; read from the schematic by eye | |