Transistor not switching closed

The Raspberry Pi is a series of credit card-sized single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote the teaching of basic computer science in schools and developing countries.

Post Reply
User avatar
/RaspberryPi
Corporate
Posts: 2449
Joined: Wed Jun 05, 2019 1:29 am

Transistor not switching closed

Post by /RaspberryPi »

I have an NPN transistor with the base connected to a GPIO pin, with a 470 ohm resistor. The transistor is meant to switch on the "push-to-talk" button on a 2-way radio. The transistor works as expected when a power supply set to 3v3 is connected to the base and turned on. The transistor does not let current through, however, when this is instead connected to a raspberry pi GPIO pin. What would cause this?

submitted by /u/the_bing_bong_theory
[link] [comments]

More...
Top
Post Reply

Return to “Raspberry Pi Forum”