ante

The bypass relay will

Yes, a bigger heatsink is a good suggestion the mosfets are normally not very easy to smoke but sometimes you succeed 8). As I mentioned in your other thread (which I read before this one) I have a circuit in a notebook somewhere, and I will find it (I hope) and let you know. I remember this circuit to be very efficient (no heat) and rigid. I am beginning to get a picture of you, no hair on top is a start ;D. If using a PWM circuit and run it at full power during longer periods it

Moved from earlier thread: From where should this energy possibly come? The increase in the battery voltage does not say anything about regenerating energy. I can think of a number of reasons why the voltage increases, one is that during acceleration of the motor the current is higher than when the rpm has stabilized this will naturally let the battery regain it

Try this Rhonn: http://www.conexant.com/support/md_winxpinfo.html#q1

Rhonn, I think Audioguru just described it very careful. Do you have needs for this kind of charger? Got a lot of static and thunderstorms were you live? Have you ever heard of Benjamin Franklin? All you need is a long cupper wire and a kite, don

Sceptic, yes absolutely. Basic rules: You can

It is possible that the

Maybe water jet cutting can be used for

You say the 555 get hot, I must ask (with the risk of being rude): is the 2N3055 correctly connected? I think maybe you need a resistor at the base, how is the load connected? The 555 can at 12V with output high sink lots of current trough the emitter diode and load (if any) to ground. This can be the reason for the heat.

OK, lets see.. if you want to experiment with electronics you need some equipment. We have established that you own a multimeter, what else have you got so far?

What do you say about this? http://www.angelfire.com/ak/egel/capcharg.html Can there be an ounce of truth in this, or is it all bull?

Well, then at least you can check your resistors. Maybe your capacitors to if are lucky enough to own a multimeter with a range for these also. When checking your resistors it is a great opportunity to learn the color code to if your not already a master of it.

http://www.temperatures.com/tcs.html

Do you own any multimeter?

Audioguru, His name was ROY 8) and the song was

Amazing stuff here, have a look: http://www.dazyweblabs.com/shannonsoft/page3.html

GPG, Is it possible still to get these IC s in this millennium? ;D

MP, Yea, sure it

Guys, About the formula, I have seen 1mm/1kV at normal humidity (whatever that is).

You could try

I am glad that you are recovering from the flu. I am going to read the article (your link) to get an opinion of the idea. About the residual voltage, it should be easy to have a shutdown of the pulses at the same time as the engine stops for any reason. This could be accomplished in many different ways depending on the engine and it

I see, these where new to me. The once I have been in contact with where not SWITCHES they where used to measure current. When you said Hall effect IC I did not think switch. Sorry, my mistake! Well it looks simple enough to get them to work, I don

Since this is not a serious thread anyway I think it

The most common UPS:s where I work just have trickle charge at 27.6Volts and these batterys (Dual Panasonic 12V 14Ah) is changed every five years. When measuring voltage and voltage under load (40 A for 15s) on these recycles only 5 out of 50 show any signs of degradation. However there is a charging method called reverse pulse charge that can be used if one considers idling a threat to the battery. Sometimes a high current pulse is used, once every hour (or at any suitable interval) a high current pulse is pushed through the battery causing the voltage to raise and stir the electrolyte. The length of this pulse can vary as well as the strength. The number one reason for batterys to lose there capacity is sulphating and one cause for this is the separation of the acid in the electrolyte. This means that on the bottom of the cells the gravity of the electrolyte can be 1.28 and on the surface 1.22. The sulphating starts at the bottom of the cells and eventually causes shorting of the plates. This will not happen if you can stir the electrolyte from time to time. On some bigger batterys they are even pumping air through plastic pipes that discharges at the bottom of the cells during charging. This is like the pumping of air in a fishtank only it

sasi, Well the high point can be 13.75V without losing any water and the low point depends on how long you want your battery to live. Best tip here is the manufacturers recommendations for maximum discharge (minimum voltage). An alternative is to trickle at 13.75V and never shut it down completely.