A darlington transistor can be used as a solid state switch controlled by a low current PICAXE output and able to switch a higher current load that a PICAXE output could not handle directly.
Darlington Transistor
Schematic
PCB
Activate a transistor
The following program will activate a transistor connected to output B.1 for a second every five seconds.
- Code Example:
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main: high B.1 ; Switch on output B.1 pause 1000 ; Wait 1 second low B.1 ; Switch off output B.1 pause 5000 ; Wait 5 seconds goto main ; Loop back to start
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Create Module
The BCX38C darlington transistor create module can control many diffrent devices, such as the buzzer shown here.
Bill of Materials
| Description | Code | Qty | |
|---|---|---|---|
| BCX38C Darlington driver transistor | TRT002 | 1 | Buy Now |
| 1N4001 Diode | RES041 | 1 | Buy Now |
| 1k resistor (pack 100) | RES1K | 1 | Buy Now |
Simulation
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