Driver Transistor Is Also Called Load. When the pnp transistor is in on condition there will be current flow from source to load and then to ground via a transistor. Karen explains from the ground up how bipolar junction transistors bjts operate.
The current taken by a device is called the load current. In addition to reading the questions and answers on my site i would suggest you to check the following on amazon as well. Transistors are often used as electronic switches to control loads which require high voltage and current from a lower voltage and current.
An led driver is an electronic circuit that utilises a transistor to switch power to an led.
By the way there are off the shelf components called a load switch these are ics that have a p channel mosfet as the switching transistor with a built in driver for that p channel. When two pn junction diodes are placed back to back or opposite to each other we get a. This circuit is just the power driver for the speaker. If the led has a higher power requirement then it is best to use an npn transistor as a driver.
