jmmendicoa

Hi ,does anybody knows a project for building a High Voltage Probe from 0 to 30 Kv . I will apreciate if send the project to me

Finnily i will use a small transformer and with a LM-317 ,i will fixed the output for a 6.88 vdc (with out the batery). Thanks to all the comunity for the answers .I learned a lot off. Thanks for all of you.(I will use the trikle method for chargin a ni-cad cell. jose mendicoa al. venezuela [email protected]

transformerless because i want to make simple,just like an emergency lamp ,it does charge the batery 24 hours a day,with a very slow rate of charge,in case the power goes off,the batery will suply the 6 vdc for the circuit (it is not a lamp). I know HOW to get a full charge ,it must give up 2.35 volts for cell= 2.35 x 3 = 7.05 volts The problem is that i dont know how to design a charger with a slow rate of 10 % of the total current of the batery (4 amps). With a relay i will switch the batery in case the power goes off. I hope you understoo my english. Thanks Jose Mendicoa Valencia Venezuela [email protected]

I need to charge a 6volts 4amps lead acid batery ,it will be charging all the time and the circuit must operate with 120 vac ,the charger must not use a transformer,any idea where to go for the squema. Jose Mendicoa Valencia Venezuela [email protected] Thanks

I have a digital multimeter with PC interface(rs232) RADIO SHACK 22-812 conected to the PC works fine,it measure frecuency,ac volts,dc volts resistance,capacitance,temperatue ,digtal meter,analog meter,the only thing that i have not be able to see on the scope is the ac volts wave -form.FOR EXAMPLE i measure tha ac volt line (120volts 60 hz) ,i can see on the scope a line at 120 volts amplitude LIke 120 vdc,but i am no able to se the sine wave on the scope.Having the vertical input in auto,and the horizontal in auto too.Is this virtual scope able to show me the wave of any ac voltage measurement.It shows me the rsm value of the measurment. Jose Mendicoa Valencia Venezuela [email protected]