I was trying to build a 555 timer the other day from discrete components and ran across a transistor that not only had I never seen but also found out that you couldn’t attain. It’s called a dual emitter transistor and has two emitters. Searching for an alternative, I ran across this schematic that said it’s nothing more than a nand gate without the amplification. So here it is. If I’m wrong on this or you can educate me, please do!
