diode dark background seamless pattern

line diagram brand screenshot cartoon presentation number drawing design logo document games toy poster plan diode symbol vector dark background seamless pattern editable fabrics invitations merchandise cards additional element electronic electrical project electricity dark electronic pattern circuit vector background technology engineering design icon board electrical texture computer chip radio graphic wallpaper components equipment digital power industry collection science robots set electric schematic symbol editable color modern diode zener light emitting led varicap tunnel varactor anode cathode shockley schottky flat repair