As you may noted, power supply for the PWM circuit is down-converted and regulated with the help of a 3-pin fixed regulator chip LM7805 (IC2). This will improve the circuit stability. Precision 50K ...

The Bosch 12V Max EC Brushless Flexiclick 5-in-1 Drill/Driver System is on sale for $134, a 41% discount from its normal price of $229. This tool is a strong seller on Amazon—shoppers took home ...

With the help of this DC drill speed controller circuit you can control the number of revolutions of your drilling machine. A mini-drill machine is always needed in drilling the printed circuit board.

18V Drill/Driver with 5-In-1 Flexiclick System and (1) CORE18V 4 Ah Advanced Power Battery (GSR18V-800FC) 5-in-1 design: Delivers versatility with one-click technology Brushless motor: Delivers ...