LM555 car amplifier power supply

Astro Power · 4th October 2004, 10:13 PM

i have a old amp with upper Volt 12V to 25V + -

it is work it LM555.

where can i find this schmetic....... to build a car amp power supply with LM555

thanks
tamir

jaycee · 5th October 2004, 08:02 AM

It will be a switch mode supply using the 555 as a crude Pulsewidth Modulator (PWM). If you look on Google you will probably find quite a few schematics of this kind.

Better though would be to build a switch mode supply on a better chipset, if chips are difficult to get in your country look to the TL494 as they are common in PC power supplies (I have several of them from otherwise dead PC psu's

)

Ouroboros · 5th October 2004, 08:18 AM

The 3842 / 3843 family is available from lots of manufacturers all over the world at low cost. It's a very easy chip to use with plenty of helpful app-notes, and ideal for stepping 12V up to 25v.

Astro Power · 5th October 2004, 10:17 PM

thanks all

4th October 2004, 10:13 PM	#1
Astro Power diyAudio Member Join Date: Sep 2004 Location: Binyamina	LM555 car amplifier power supply i have a old amp with upper Volt 12V to 25V + - it is work it LM555. where can i find this schmetic....... to build a car amp power supply with LM555 thanks tamir

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Car Amplifier Power Supply	Perry Babin	Car Audio	47	27th January 2008 07:45 PM
Power supply for Heathkit WA-P2 pre-amplifier	ghola	Tubes / Valves	4	29th December 2006 02:04 PM
Amplifier power supply test-bed	jackinnj	Solid State	0	7th July 2004 09:19 PM
Amplifier power supply question:	K-amps	Solid State	37	4th December 2003 12:47 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

5th October 2004, 08:02 AM	#2
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	It will be a switch mode supply using the 555 as a crude Pulsewidth Modulator (PWM). If you look on Google you will probably find quite a few schematics of this kind. Better though would be to build a switch mode supply on a better chipset, if chips are difficult to get in your country look to the TL494 as they are common in PC power supplies (I have several of them from otherwise dead PC psu's )

5th October 2004, 08:18 AM	#3
Ouroboros diyAudio Member Join Date: Dec 2003 Location: Nottingham UK	The 3842 / 3843 family is available from lots of manufacturers all over the world at low cost. It's a very easy chip to use with plenty of helpful app-notes, and ideal for stepping 12V up to 25v.

5th October 2004, 10:17 PM	#4
Astro Power diyAudio Member Join Date: Sep 2004 Location: Binyamina	thanks all

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)