thanks for the reply.
Actually, i still not fully understand the statement "any series resistance will screw up the load regulation"
Can explain further?
Just change the LM301 with TL081 without any modification?
The reason i want to monitor is not want to know how far it is being charged but i want to terminate the charging once it full. Any idea?
Actually i need to view the main because i will implement inverter later part and i want to check...
@audioguru
I not sure where is Sasi ???
Is it mean that his circuit no longer work? Do you have any idea on how to monitor the charging process? Do we need to monitor the battery voltage OR charging current during the charging process? I might want to do this with microcontroller's ADC...
Is that ok and what happens if i omit the 0.22R?
Can u help me in this too?
http://www.electronics-lab.com/forum/index.php?topic=5518.0
Actually, i plan to make a similar charger with monitoring either by using comparator or microcontroller ADC and will cut off off the charging process once...
Can i know what is the main difference between your "Battery charger 2" with my circuit earlier other than those protection diode?
The pot in your battery charger 2 is used to set current but not voltage? Can u explain why this can happen?
Let say, i confirm that i want 14.4V at the battery...
Thanks audioguru and MP for the reply.
@audioguru
Is it possible to make it using only 1 LM317? This is because almost all the battery charger circuit in the end market UPS system that I traced, they only using single LM317. And also I want to reduce cost if possible. If based on my earlier...
Hi all and Sasi if u see this.
This battery charger circuit i think i get from my thread last time and i think want to implement this.
Can i know how u control the chraging current in this circuit? Is it by the 0.22R/10W?
And for the monitoring part, do u have other way to monitor the...
Hi,
I want to ask a question about transformer as i very confuse about the multitap transformer.
In the circuit i put below, can i know what is the voltage for V1 and V2? Is it 16V or 32V? And is it V1 still an AC?
The diode is 1N5399.
Then below is the transformer that connected to LM317...
I have been study this type of charger quite a while.
Now i wish to charge 12V 7Ah SLA battery.
To charge the battery, u need a constant voltage and current source. First, u need to charge the SLA battery for 2.4V/cell. Charging current should be around 0.1C. The charging current will drop...
Hi nura100,
I also want to buy some books that related to UPS design (particular in inverter and charger design) similar to what u posted before.
Is it possible for me to get it?
Can PM me or email me ([email protected]) regarding this?
Thanks
I also having difficulty to understand the high freq transformer. I dunno how to read their specs and which spec i should use. Any help pls? Thanks
What core of the transformer and what switching frequency normally being used?
Is the feedback from the optoisolator is to let the PWM controller to properly adjust its duty cycle so it can adjust to the desired output voltage?
If that so, how about current? How we gonna know or control how much current will reach the output?
I know this related to the another thread...
Wow, after having not reading my own thread for 2 weeks, it end up with so many discussions. Bravo.
For Arun > Is it possible for me to get the manual or reference book for UPS? I want focus in the battery charger and sine wave inverter study. My rough spec will be 12V 7Ah SLA battery...
If i using transformer to step down the main voltage, will the output AC waveform exactly same as the input AC from main??
I heard that floating can be done on the oscilloscope in order to probe the 240VAC main. Another method is using differential probe.
Am i right? How to do the both methods...