2
votes
1answer
72 views

Safe way to wire CMOS ICs together

I have a question about the safety (to the ICs) of wiring the output of one IC directly to the input of another IC. simulate this circuit – Schematic created using CircuitLab For ...
5
votes
6answers
893 views

What is the function of the resistor in the below circuit?

What is the function of the resistor R13 in this circuit?
0
votes
1answer
114 views

Miniaturization of MOSFET vs. Resistors

I've been studying some vlsi lately and came across instances where the author mentioned that it is easier to use MOSFETs at the micron level than it is to use a resistor. Therefore at many ...
1
vote
2answers
156 views

How to set a resistance between two points by a digital input

For context, this is my first real delve into electronics. For my current project, I need that varies the resistance given input from an arduino. What I was trying to do was, in conjunction with a ...
2
votes
2answers
73 views

CD74HC125E, resistor or not resistor?

I have here an interesting piece of hardware, a CD74HC125E that someone gave me. This chip (can I call this an IC ?) is able to set its outputs to high voltage, low voltage or high impedance. Do I ...
4
votes
4answers
312 views

Is current the same coming out of an IC as it was going in?

This is my first diagram so keep that in mind. I've come up with this circuit because I've got some 74** series ICs and I want to be able to make them work. This example is a simple AND gate with ...
0
votes
1answer
1k views

TLC 5940 PWM driver blank input and pull-up resistor

I've read some of the data sheet for the TLC 5940 and it states the following about the BLANK input: Blank all outputs. When BLANK = H, all OUTn outputs are forced OFF. GS counter is also reset. ...
1
vote
1answer
76 views

Modifying an old phone to draw less power?

I have a phone that I would like to install in my car as a GPS tracker, using the following guide: http://gizmodo.com/5691724/how-to-track-your-vehicle-on-the-cheap I'd like to keep it hardwired to ...
4
votes
1answer
491 views

Can I connect ICs directly together

This is probably answered elsewhere but I can't seem to find it. I have a circuit which uses a Mega8 to drive a couple of ICs as shown in the diagram below. The ISP connectors in the diagram are: ...
0
votes
1answer
479 views

how to choose the transistor for following case?

I planned to use the following circuit to run unipolar motor. I got this circuit by surfing internet. I know how to choose the transistor for driver circuit by knowing the base current, but in this ...
0
votes
1answer
235 views

How to properly store components efficiently and effectively [duplicate]

Possible Duplicate: What's the best way to store and categorise resistors/capacitors/ICs/etc? I have MANY resistors and many other components as well and currently I am using a very ...