mstechca
New Member
Its amazing how one lousy resistor can affect the entire operation of a circuit :lol:
I don't know exactly how to ask this, but here is the scenario:
Say that I have a push button connected from VCC to the input of a NOT gate (or the input to any pin of any IC) Also, the input is connected to ground through a resistor.
Lets assume I decide to do the reverse (resistor connected to VCC and button connected to ground.
The question is what is the best resistor (or best range of resistance values) I should use in the above scenarios and why?
I'm asking this because I notice that a very high value resistor has almost no effect, and a low value resistor (about 330 ohms) makes the IC malfunction while the resistor is used.
I am mainly using CMOS 4000 series IC's, and I use some 74HC series IC's as well.
I don't know exactly how to ask this, but here is the scenario:
Say that I have a push button connected from VCC to the input of a NOT gate (or the input to any pin of any IC) Also, the input is connected to ground through a resistor.
Lets assume I decide to do the reverse (resistor connected to VCC and button connected to ground.
The question is what is the best resistor (or best range of resistance values) I should use in the above scenarios and why?
I'm asking this because I notice that a very high value resistor has almost no effect, and a low value resistor (about 330 ohms) makes the IC malfunction while the resistor is used.
I am mainly using CMOS 4000 series IC's, and I use some 74HC series IC's as well.