Basics of BC547 Transistor Pinout, Specs and Uses

BC547B NPN Transistor: Pinout, Datasheet, and Equivalent

Water Level Indicator Circuit using Transistor and ULN2003 IC

Cat The Vet on Instagram: "Are you a responsible dog owner when you are out enjoying our beautiful countryside? You pick up after your dog, you keep them on a lead around livestock, you always close the gate….. but do you protect them against tapeworms? Recently I met Hannah, @redshepherdess , and we chatted about what a responsible dog owner looks like to her as a sheep farmer, and tapeworm prevention was very close to the top of her list! Tapeworms are a common parasite in our dogs if we don’t