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    To Sasi and all experts!

    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...
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    Transformer and LM317 Question

    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...
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    How to measure main AC 240V?

    Hi all, Can I know the way to measure main AC (240V)? If i using multimeter, can i randomly put the + and - probes on the neutral and live line? If i want to see the main waveform, what device should i use? If normal oscillocope able to do this without burning it? Or i need some special...
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    Transformer help

    Hi all, I'm lack of knowledge on how to read the spec, types of different transformer. I also not sure about the schematic representation for a certain transformer. For example, given me an unknown transformer, i not sure how to see the specs (how many volt to how many volt and its VA) and...
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    Troubleshooting for SLA battery charger

    I have built this battery charger according to this site http://www.interq.or.jp/japan/se-inoue/e_car2.htm I manage to charge the battery but it very slow. Can i know what charging voltage should i use. What i mean is what is the output voltage from LM317 should i make? It seems like even...
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    Inverter Circuit 12V DC to 230VAC Sine Wave

    Hi all, Any1 have idea where can i get the inverter circuit from 12V DC Sealed Lead Acid battery to 230VAC with pure sine wave output? The output power preferable to be around 400W. Thanks.
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    Switching charger for SLA battery

    Hi all. I'm plan to design a switching charger for a Sealed Lead Acid Battery with ratings 12V and 7Ah. I plan to use current mode controller either UC3844A from Unitrode or HA17384 from Hitachi. Can i know where can i find the schematic for this? And i also not sure how to control the...
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