need suggesions for trickle charger/backup, 5 volts, - Electronic Circuits Projects Diagrams Free

elangomlog · 12th August 2004, 06:14 AM

hi
this is elango. iam designing a ckt for motor and temp controller,with pic. i need a battery back up(trickle charger) for the controller only to retaining set values,which were set before power failure so that the process can continue with the old set values after the power resumes.the power cut may be for a short duration(max 1hour).thank you

Sebi · 12th August 2004, 06:57 AM

I recommend a simple 6.9V supply with LM317, this can charge a maintenance-free lead acid battery in parallel mode. LDO can work from 6.9V.

elangomlog · 16th August 2004, 12:05 PM

hello friends,

i thank you for the suggtion to use lm317.i really want to use a trickle charger ckt since i have committed to do so, please help me with some sort of ckt which uses a trickle charger chip which acts as a charger cum supply for my 200ma load (microcontroller, lcddisplay & backlite etc).so that i can use a maintenance free batery as a backup.

elangomlog · 18th August 2004, 08:38 AM

somebody please help me with some sort of ckt which uses a trickle charger chip which acts as a charger cum supply for my 150ma load (microcontroller, lcddisplay & backlite etc).so that i can use a nicad /nimh batery as a backup

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12th August 2004, 06:14 AM	#1
elangomlog	need suggesions for trickle charger/backup, 5 volts, hi this is elango. iam designing a ckt for motor and temp controller,with pic. i need a battery back up(trickle charger) for the controller only to retaining set values,which were set before power failure so that the process can continue with the old set values after the power resumes.the power cut may be for a short duration(max 1hour).thank you

12th August 2004, 06:57 AM	#2
Sebi	I recommend a simple 6.9V supply with LM317, this can charge a maintenance-free lead acid battery in parallel mode. LDO can work from 6.9V.

16th August 2004, 12:05 PM	#3
elangomlog	hello friends, i thank you for the suggtion to use lm317.i really want to use a trickle charger ckt since i have committed to do so, please help me with some sort of ckt which uses a trickle charger chip which acts as a charger cum supply for my 200ma load (microcontroller, lcddisplay & backlite etc).so that i can use a maintenance free batery as a backup.

18th August 2004, 08:38 AM	#4
elangomlog	somebody please help me with some sort of ckt which uses a trickle charger chip which acts as a charger cum supply for my 150ma load (microcontroller, lcddisplay & backlite etc).so that i can use a nicad /nimh batery as a backup