0
\$\begingroup\$

I am using a self-built electromagnet in my project that consumes 9.0 amps at supplied voltage of 12 VDC. I don't mind even if amps goes high. The power supply I am using can provide up to 30 amps. I have to experiment with providing an oscillating power supply to electromagnet.

I want to use IC 555 timer for that purpose. But IC 555 timers that I searched appear to have output 200 mA. Is there any 555 timer that provides high current what I need OR is it possible to use same 555 timer with some external equipment for that. Any sources or tutorial for that will also be very helpful.

\$\endgroup\$
8
  • \$\begingroup\$ What's wrong with using a separate driver? \$\endgroup\$ – Ignacio Vazquez-Abrams Jan 22 '14 at 11:47
  • \$\begingroup\$ We've already discussed using an H-brdige driver for your project. Why would you abandon that? \$\endgroup\$ – Dave Tweed Jan 22 '14 at 12:15
  • \$\begingroup\$ @DaveTweed: That is not abandoned. These are two separate things. \$\endgroup\$ – enterprize Jan 22 '14 at 12:24
  • \$\begingroup\$ @IgnacioVazquez-Abrams: Can you please provide some source/tutorial for that. I have not found that in my search for oscilating power supply. \$\endgroup\$ – enterprize Jan 22 '14 at 12:26
  • \$\begingroup\$ The H-bridge driver discussed in your other question is the component that converts a 555 timer (providing the low-current oscillating signal) and your DC power supply (providing the steady high current) into a high current oscillating power supply. \$\endgroup\$ – Chris Johnson Jan 22 '14 at 12:47
0
\$\begingroup\$

No, there is not a 555 timer that can drive 9 amperes. However, a 555 can drive a transistor which can drive 9A.

\$\endgroup\$
4
  • \$\begingroup\$ OK, that is very nice. Can you please put here a link of such a circuit/tutorial. \$\endgroup\$ – enterprize Jan 22 '14 at 13:28
  • \$\begingroup\$ @enterprize I already did. The linked Wikipedia article not only demonstrates the basic use of a transistor, but tells you about the different kinds, history, construction, underlying physics, and links you to dozens more concepts you should study. \$\endgroup\$ – Phil Frost Jan 22 '14 at 13:31
  • \$\begingroup\$ thank you very much, I have already read that and many others about transistors. I can & will search more based on your answer about this specific problem. Basically I ask bec you may already have some very good links to one. \$\endgroup\$ – enterprize Jan 22 '14 at 13:43
  • \$\begingroup\$ @enterprize Google works by seeing what links people have. If you want to get a consensus on what most people think a good link for some topic is, Google is exactly that. \$\endgroup\$ – Phil Frost Jan 22 '14 at 13:52

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.