ante

Hi Guys, Note that the maximum load will also be affected by the switching time (on) which increases with a lower coil voltage.

Hi Aan, Commutating thyristor circuits are used for a few different applications, for example electric vehicles and electric forklifts.

Why not contact Mixos as a volunteer moderator, might be the thing for you Logan!? ;)

Hi rhoweth, Welcome to our forum. I suppose you have already checked for internal fuses in case there are any? To be able to help you diagnose the inverter we need a schematic I’m afraid. Also it requires some measurements to be performed and some level of electronics skill. I don’t know if these criteria’s can be reached?

Hi MP, Oh yes, I’m old enough to have had my hands both on and inside a few of those! Lost of chattering relays, stepper-relays and solenoids inside them. Who could forget? ;D

No Moderator here, that’s why! ;)

Thanks Logan! Now I know it’s not at my end!

Hi Guys! Uploading rules says 50000 kb maximum file size but above 6200 kb I get errors every time I try! Have to split the files despite the “new” higher limit of 50000 kb! Anyone else tried and failed here?

Sorry, haven’t got a clue! I have also tried to contact him by mail but no luck yet! I searched for his phone number and got just over 1000 hits on his name so don’t know where to start! ???

Hi indulis, I think you got a point there. Since Gus does not reveal the amount of current he needs at 9Volts I’m not really sure where we stand here? If only a few mA are needed it might be possible to use cap / diode step-up right after a MAX1674 chip!

There are lots of switchers that will run from 0.7 Volts but with a 9 V output it’s harder to find! If it is possible to settle for 5.5 or 6.5 Volts the MAX 1674/76, 1700/1701, 1703, 1705/1706, 1708, 1760/1760H, 1763, 1947, and a few more would do the job. Even though some of these have a voltage divider feedback to set the voltage it’s not recommended to go above 5.5 or 6.5Volts, I wonder why? Could it be loss of performance or what sets the limit here? Anyone?

No, not Japanese it’s Danish you must have heard wrong! ;D

That was a bit fishy! ;D Am I missing something here?

Hi Gus, Welcome to our forum. The TL499A should work here I believe.

Hi Trevor, Have you had a good look-around in the “Electronic Resources” for some related e-books?

There are other models here : http://www.cannonloadbanks.com/PRICING.html You have to ask, but I think the 60Hz versions will also work with 50Hz.

Hi John, I thought everyone knew this already, but thanks anyway! ;D ;D

Congratulations Doc, 100 posts!! :D ;D 8)

Hi Guys, Well I don’t own it, I just use it; I bought it for the company where I work for US$8000 including shipping. It’s the size of a suitcase, here it is: http://www.cannonloadbanks.com/l120.htm Works perfectly, outstanding quality!

Yes, I am curious too! I got an AC dummyload for 0 to 120kW; it’s a very expensive tool!

Hi Kevin, Welcome to our forum. We like to help you but you must show us what you got so far, please post the circuit you got. ;)

It’s all about “X” here! ;D

Hi Guys, Here is a simple project showing one way to measure current using a Hall sensor. Even if you do not want to build one of these, you can learn from the circuit and description! ;) Current_Clamp.rar

Hi Shaiqbashir, Ok, I got two new ideas for you. ;) On top, a couple of flaps made from rubber or some soft plastic material keeps the balls from falling out of the tube. Through a hole on the side of the tube the balls are punched out of the tube passing the rubber flaps the next ball in line is stopped by the flaps waiting for the next kick. To punch the balls you have various choices; solenoid, linear motor, pneumatic cylinder or even a hydraulic cylinder if you like. The lower one; through a slit along the tube the arms of the cross wheel can get to the balls. Driven by a stepper motor the cross wheel should be run 90 degrees at a time to alow one ball at the time to leave the tube. ;D I hope it helps! 8)

Hi Jack, Unfortunately I don’t have the book (at least not yet) in your link. But I have another one on this subject which I think is very informative, I hope you agree