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atmega burner
Hi there,
I use AT-PROG with the sercon-mini h/w cable.
I downloaded the following file from http://www.speedy-bl.com/
It includes three circuits for AVR programmers.
Regards
Nic
LC Meter
Hi there everyone,
Here is files to a LC meter that I have tested and it worked. I am currently designing a LC tweezer with the cicuit to use for SMD components. Apperently the site is still going on. Visit it to see the other circuits the guy has.
**broken link removed**
Regards
Nic
speed transistor
Hi there,
Every transistor has a rise time (Tr) and a fall time (Tf). You cannot use a signal with a frequency that has a period (frequency = 1/period) smaller than the sum of these times. The datasheet usually give directly the frequency(Hz) the transistor can operate on.
To...
Hi there,
If I calculated the current for an mosfet to be 10A @40•C Ambient standing in free air from the datasheet. I for instance find that I have to have 5Vgs on the gate to allow for this current to flow. Say I know the current will never go above 10A. Do I have to only provide for the 5V...
Hi everyone,
OK, I want to drive these MOSFETS from 7.2 - 14V batteries. So I need a charge pump that can output at least 25mA or higher at 18V, it needs to also put out Vcc + 11V more or less. The MAX622 does this but only puts out +- 2mA at 18V, so it does not have enough power to drive the...
Hi there,
I think I figured it out, and the problem is with the floating power supply. With low side MOSFETS you need 0V + 10-15V to fully drive the MOSFET. But with the High Side the gate supply must be Vcc + 10-15V.
I could not see the difference because I have a supply of 7.2V and needed...
low side mosfet
Hi everyone,
I just need to understand an elementary question here please. I understand how to drive a HIGH side N-Channel mosfet in an H-Bridge and why the Gate voltage must be 10 Volts or higher.
Can any anyone please explain the gate source voltage on a low side N-Channel...
Re: problem in isp.
Well it is a bit disconserning that you do trust a breadboard's connections. It is basically just two copper plates that holds the connection. They can bend and make no connection. Point is you just cannot trust a breadboard connection, especially if it is used for a few...
Hi there,
Here is a nifty project that uses the ATmega8 as a Volt Ampmeter that measures 30V and 3A.
https://www.electronics-lab.com/projects/test/022/index.html
Maybe that is what you need or you can learn from it.
Regards
Nic
Hi there,
This is precisely what you need :
https://www.electronics-lab.com/projects/games/005/index.html
I have built it and it is not just easy to do it is very beautifull too.
Regards
Nic
Re: Problem with 1x16 LCD...only 8 chars coming in display..
Hi there,
Which adresses do you use to write to each line. You must move the cursor to the second line address to be able to write to it.
1st Line: 0x00
2nd line : 0x40
Regards
Nic
Re: PWM problem
Hi there,
The 15Ω resistor I just use as a dummy load to see if I get the right PWM signal over my load.
This is the high side of a H-bridge I want to build, so the 15Ω resistor would be a motor in the end.
The reason I use two transistors to drive the mosfet is to protect...
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