A teacher I know is stuck, with only npn transistors in the supply cupboard and the need to create a reversible motor drive for an Arduino project. Reversing ‘bridges’ have four switches (relay ...

Every time I log in, I’m presented with a list of new Blinky LEDs, Raspberry Pi accessories, Arduino ... one click” button. Two days later I had a “SainSmart Mega328 Transistor Tester ...

For example, transistors and resistors replace the entire IC (Figure 1). The circuit handles only the clock signal or only the data signal. Two npn transistors, connected head-to-head, form the heart ...

You put a component in the socket and it will identify — with a push of a button — what the part ... a diode, or a transistor and get a readout of which pin is which. It seems like magic ...