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anyone that is interested to make their own voltage controlled switch here is a circuit i have been using for many many years it is just about foolproof and simple to build.it can be used in either direction ,to turn off a rising voltage or a lowering voltage its adjustabe between about 15.5v and 8v. the turn off voltage and the turn back on voltage is independant of each other
It has one drawing fault , the 10 ohm resistor should be before the 1n4004 diode where the +12v battery input is,
here is the circuit for what you need it is ajustable to any low voltage point to turn off something and is adjustable to any point above that to turn back on again
You connect the sense wire and the 12v wires to the battery.. for most purposes.. the link is marked H/L and L/H in its present position the most likely to be used it switches at a lowering voltage..example batt drops from 12.6 to 10.6 it will switch something on/off then it turn on/off again at a higher voltage both settings are independant .. if link in the L/H position it switches something on rising voltage.. I did it so it could be used for auto uses of voltage sensing fot things like turbo cooling. extra fuel mix.. etc.. This position has almost no uses that I can think of for solasr/battery/wind
You must use a multiturn variable resistor for the 1meg ohm
Sorry I dont sell them.. but its an old design of mine have used for years.. but it uses easily available parts.
But if you go into manufacture of them and make a million please be kind enough to send me a little to buy a beer or two
Total cost of parts about $20 us/au And you dont have to bite bullets..then buy a"bought " one. this simple one can do just about anything you likely to need. and you will learn how to make a simple useful electronic device.
It has one drawing fault , the 10 ohm resistor should be before the 1n4004 diode where the +12v battery input is,
here is the circuit for what you need it is ajustable to any low voltage point to turn off something and is adjustable to any point above that to turn back on again
You connect the sense wire and the 12v wires to the battery.. for most purposes.. the link is marked H/L and L/H in its present position the most likely to be used it switches at a lowering voltage..example batt drops from 12.6 to 10.6 it will switch something on/off then it turn on/off again at a higher voltage both settings are independant .. if link in the L/H position it switches something on rising voltage.. I did it so it could be used for auto uses of voltage sensing fot things like turbo cooling. extra fuel mix.. etc.. This position has almost no uses that I can think of for solasr/battery/wind
You must use a multiturn variable resistor for the 1meg ohm
Sorry I dont sell them.. but its an old design of mine have used for years.. but it uses easily available parts.
But if you go into manufacture of them and make a million please be kind enough to send me a little to buy a beer or two
Total cost of parts about $20 us/au And you dont have to bite bullets..then buy a"bought " one. this simple one can do just about anything you likely to need. and you will learn how to make a simple useful electronic device.
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