Part 1: Light Touch Construct the first circuit using a single transistor, an LED, a power source, and a resistance. The brightness of the LED will indicate the relationship between the current ...

One thing led to another as we figured out how ... I would approach the RFID reader using a variation on this circuit; a single transistor regenerative receiver which is just oscillating at ...

The transistor then switches on a second BC547, which lights an LED. The whole circuit is built on top of a battery clip so it can be run straight from the top of a standard 9 volt battery.

This now allows the base leg of the NPN transistor to switch ... activating the LED. identify components: start by identifying all the components in the circuit diagram. positioning: place the ...

The group was led by William Shockley ... created an amplifying circuit that seemed to work, using the element germanium They called it the point-contact transistor. Its discovery was announced ...