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APR9031 simple voice recorder
- Category
- Delay· Delay Echo and Samplers
- Price
- see vendor
- Tags
- Delay Echo and Samplers
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 29 rows
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Check before you build · 1 value the reader of this schematic was not sure of
- C3: schematic says .1nF, parts list 100n; used the list
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| R1 | 56K | 56k | sets sample rate/record time; 67K gives 24 s, 89K 30 s; read from the schematic by eye | |
| R2 | 1K | 1k | read from the schematic by eye | |
| R3 | 220K | 220k | read from the schematic by eye | |
| R4 | 1K | 1k | read from the schematic by eye | |
| R5 | 470R | 470 | read from the schematic by eye | |
| R6 | 470R | 470 | read from the schematic by eye | |
| R7 | 4K7 | 4.7k | read from the schematic by eye | |
| R8 | 10R | 10 | read from the schematic by eye | |
| Capacitors 13 | ||||
| C1 | 100n | 100n | drawn 0.1uF; read from the schematic by eye | |
| C2 | 4.7uF | 4.7u | electrolytic; read from the schematic by eye | |
| C3 | 100n | 100n | parts list says 100n; schematic prints '.1nF'; read from the schematic by eye | |
| C4 | 100uF | 100u | 16V electrolytic; read from the schematic by eye | |
| C5 | 100uF | 100u | 16V electrolytic; read from the schematic by eye | |
| C6 | 100n | 100n | drawn 0.1uF; read from the schematic by eye | |
| C7 | 100n | 100n | drawn 0.1uF; read from the schematic by eye | |
| C8 | 100uF | 100u | 16V electrolytic; read from the schematic by eye | |
| C9 | 100uF | 100u | 16V electrolytic; read from the schematic by eye | |
| C10 | 100n | 100n | drawn 0.1uF; read from the schematic by eye | |
| C11 | 100n | 100n | drawn 100nF; read from the schematic by eye | |
| C12 | 100n | 100n | Zobel network; read from the schematic by eye | |
| C13 | 100uF | 100u | 16V electrolytic; read from the schematic by eye | |
| ICs 3 | ||||
| IC1 | APR9301V2 | APR9301V2 | voice record/playback chip (title says APR9031); read from the schematic by eye | |
| IC2 | LM386N-1 | LM386N-1 | read from the schematic by eye | |
| IC3 | 78L06 | 78L06 | 6V regulator; read from the schematic by eye | |
| Trimmers 1 | ||||
| Volume | 10K | 10k | VR1, Koa trimpot per parts list; read from the schematic by eye | |
| Switches 2 | ||||
| Record | Tact | TACT | Zippy tact switch; read from the schematic by eye | |
| Play | Hatkey | HATKEY | Hatkey switch; read from the schematic by eye | |
| LEDs 1 | ||||
| LED1 | 5mm LED | 5MM LED | record indicator; read from the schematic by eye | |
| Other 1 | ||||
| MIC | Electret | ELECTRET | electret microphone; read from the schematic by eye | |