I made a circuit and it worked for a while with three sets of five LEDs connected to it but I added another four sets and it stopped working pretty quickly. The LEDs are only 20 mA so this thing was only drawing like <150 mA and I think these transistors are rated at 600 mA or more, right? The 2 V signal comes from PIR sensors but that's not really important. Should these transistors without heatsinks not be okay in this situation? Which would be the most likely to break and if it does, can it take out others with it? Thanks.
Perhaps I could put two of my transistors in parallel to support the LEDs with less chance of one breaking. Perhaps I bought some crappy transistors.
Perhaps I could put two of my transistors in parallel to support the LEDs with less chance of one breaking. Perhaps I bought some crappy transistors.
Last edited: