algilsan
Advanced Member level 4
hello,
i have a make to shitch rs232 signals, without using any type of relays, so i have used an analog switcher, this chip need dual suplly to be powered, so to be able to conmutate negative an d positive voltages of rs232 signals. My problem is that i don't know the way to generate such negative voltage from my positive (12 V). I have seen the best solution is to use charge pumps circuits, but the problem is the low current they can supply.¿?.
Can anybody help me?
i have a make to shitch rs232 signals, without using any type of relays, so i have used an analog switcher, this chip need dual suplly to be powered, so to be able to conmutate negative an d positive voltages of rs232 signals. My problem is that i don't know the way to generate such negative voltage from my positive (12 V). I have seen the best solution is to use charge pumps circuits, but the problem is the low current they can supply.¿?.
Can anybody help me?