When i want to build a circuit in real life from my circuits on this app i always stuck with transistor type because i can't find a normal transistor in the market .. So i take them from broken radios and others circuits ..
For example i have a transistor with (C945 GR331) written on it , what those letters and numbers mean? It's npn or pnp? How much voltage on the base of the transistor is needed to open the switch (i don't know how to say it).
Is there any database or tutorial for that? .. OR is there any way to make that transistor on this app?
