Hello, Yes, I should have been more explicit. I have a UNI-T UTD 2052CL 50MHz scope. When i say points of interest, I mean the beginning and ending of the waveform I want to look at. I can select these with the cursor but the cursor moves slowly when I'm trying to select them. In the manual it talks...

Hello

In cursor mode on my scope, is there a way to move the cursor more quickly; it takes quite some time to get to the point of interest.

Seymour.

Hello

In cursor mode on my scope, is there a way to move the cursor more quickly; it takes quite some time to get to the point of interest.

Seymour.

Hi, I have constructed an astable circuit and I want to use the scope to display the voltage across the capacitors. The problem is, when I use both channels of the scope connecting one channel to each capacitor the astable stops working and both LEDs stay lit. It's ok when I use just one channel on ...

Hi,

How can I make an LED fade in and out ?

Thanks

FC.

Hi Paul,

Yes, your logic circuits were spot-on, thank you. I had to tweak a few things but it's now working as required.

Thanks Paul

FC.

Hi again,

Perhaps I did not explain myself properly. I only want to light one LED at time, not together. Green at 5 degrees Celsius. Amber at 3 degrees C. And red at 0 degrees C.

Thx

FC.

Hi, I'm trying to figure OUT how to design a temperature sensor that illuminates an LED depending on the temperature. A green LED lights up at 5 degrees Celsius; an amber LED lights up at 3 degrees C; and a red LED lights up at zero degrees C. I have done this using transistors and op-amp comparator...

Hi,

I know that to turn a transistor on and off you have feed some current in to the base. But how can
I get a transistor to turn on and in doing so turn off another transistor?

FC.

Hi,

I'm trying to understand a schematic and within it there is a capacitor and resistor in series, the capacitor comes before the resistor.

Can someone explain what's going on here?

Thx

FC.