[sdiy] Voltage switching. Opamp, MOSFET or BJT.

[Thomas Blumensath]

Hallo,

I am repairing this old organ and have to replace one chip.


I will use a 4024 CMOS counter but I don't know how much current I have to drive into the circuit so I want to have same sort of switch, sitching the Voltage and the driving current into the circuit.
I wonder what would be the best switch to drive my load. I don't know exactly how low the input impedance of my circuit is but there is a 2 kOhm resistance in parallel with it so the resistance is below this.

The required Voltage is 6V which is my supply line Voltage.

Would it better to use an OPAmp or should I use MOSFETs or even BJT's.

Space is also an problem cause I want to keep the circuit is small as possible. So are there any MOSFET ICs out there with say 8 MOSFET switches in them?

Any help and tips would be nice.

Thanks.


Thoms
______________________________________________________________________________
Keinen Jackpot mehr verpassen! Mit dem Dauerschein des WEB.DE Lottoservice.
Einfach und bequem Lotto tippen! http://tippen2.web.de/?x=4