Wednesday, February 25, 2015

Circuit Schematic PCB Drilling Speed Control using LM555 IC

Robometricschool. - Here is Circuit Schematic PCB Drilling Speed Control using LM555 IC like in figure 1 below. This is a simple, inexpensive and useful circuit for electronics hobbyists. The circuit is nothing but a PCB drill speed controller, which can be used to control the speed of any 12VDC small pcb drilling units. Such portable units are now widely available, and even a hobbyist can make it without too much difficulty.

Circuit Schematic
Figure 1. Schematic PCB Drilling Speed Control
(Source: www.electroschematics.com)

Component List

  1. IC LM555
  2. Diodes
  3. Resistors
  4. MOSFET IRL530N
  5. IC 7805
  6. Capacitors
  7. LED

Description

Circuit schematic like in figure 1 above is Circuit Schematic PCB Drilling Speed Control using LM555 IC . In this circuit, the renowned timer chip LM555 (IC1) is used as a PWM circuit. The whole circuit can be powered from a standard 12VDC supply, capable of sourcing ample current to the PCB drill motor. 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 trimpot P1 is the variable drill speed controller. Finally, a logic-level power Mosfet IRL 530N (T1) is used as the output drive element. This IRL530N mosfet (available in TO-220 package) can handle current upto 27A! Fast switching and Low on-resistance – RDS (on) – are other attracting features. IRL 530N is universally preferred for all commercial-industrial applications at power dissipation levels to approximately 50 watts.



0 comments:

Post a Comment

Thank's for your visiting and reading this article, please share your idea with comment here