![When switching an LED with a transistor via a microcontroller, do I have to worry if the load supply voltage is higher than my microcontroller logic? - Electrical Engineering Stack Exchange When switching an LED with a transistor via a microcontroller, do I have to worry if the load supply voltage is higher than my microcontroller logic? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/mYnGp.png)
When switching an LED with a transistor via a microcontroller, do I have to worry if the load supply voltage is higher than my microcontroller logic? - Electrical Engineering Stack Exchange
![transistors - High side or low side LED driver with NPN BJT? Which is better? - Electrical Engineering Stack Exchange transistors - High side or low side LED driver with NPN BJT? Which is better? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/tG8nQ.png)
transistors - High side or low side LED driver with NPN BJT? Which is better? - Electrical Engineering Stack Exchange
![LEDSingleTransistor circuit is a device using just a single transistor and a couple of other passive parts. LEDSingleTransistor circuit is a device using just a single transistor and a couple of other passive parts.](https://i.pinimg.com/originals/30/8b/a4/308ba486cf5c4deab1f9655b2bc85866.png)
LEDSingleTransistor circuit is a device using just a single transistor and a couple of other passive parts.
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