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resistors in digital works
Well the circuit using the TRIAC the potenciometer only adjust the RC time for the gate of the TRIAC.
So, you could control with a uC the time of the gate of the TRIAC and then you have a "digital potencimeter" in you dimmer. You should use an optocoupler for...
capacitor
Go to KEMET and get the their capacitor KEMET SPICE viewer and then you can compare the diferences between ceramic, tantalum and aluminum for the same 1uF capacitor. Also, you can see the diferences on various types of ceramics capacitors (X5R, Y5V, X7R, C0G, etc..).
What you will...
4/35 uf capacitor
The 100nF (why do you use 0.1uF?) capacitors are of normal usage but it depends on the freq. operation f the IC. You could use 1nF, 470pF or even lower capacitors if your IC works at +100MHz for instance. Normally you should see your capacitor frequency response and then using...
frequency meter
If you have a way for counting the number of pulses in a giving time window then you can measure the frequency.
Example: You need a timer programmed for 1s and a counter connected to INT port of the uC that is incremented each time the interrupt is activated then when the timer...
mii rmii
No, you don't loose nothing. You still have 100Mbps in the RMII (2 data lines x 50MHz = 100MBps) and the control signals are still there as in the MII.
For 1Gbps you need RGMII - 4 DDR data lines and 1 control line plus clock (125MHz). So 4x125=500Gbps but because the data lines are...
sine to square converter
I think that you can solve the problem with a simple zero cross detector.
Try one of the following:
hxxp://electronicdesign.com/Articles/Index.cfm?AD=1&ArticleID=6225
hxxp://www.discovercircuits.com/DJ-Circuits/60hzclk.htm
hxxp://www.google.com and search for zero...
how do you measure high voltages using adc
if you remove the rectifier+filter and add some DC bias for the ADC you can also measure the frequency, peak, rms and mean.
foward converter
Hi,
I'm looking for help on a converter for converting 12VDC to 130VDC 0.5A.
Any ideas?
Also, I need help for converting a 36-130VDC Vin to 12Vout 2A.
I want to design a switch for commuting two fast ethernet cables for one port.
The scheme is like this:
PHY 1 ----> Transformer --->
\
Switch ---> Transformer ---> RJ45 connector
/
PHY...
How can I apply a ZERO when J4 is open?
Note that J4 represents that CARD-1 is out of the backplane. Also, J3 represents that CARD-2 is out of the backplane.
So, how do I detect that J4 is open?
Also, keep in mind that the MOSFET is useded to prevent a reverse polarity of the power supply...
I have a problem with this circuit (see the atached file please).
When J3 is closed and J4 is open the led is on because the mosfet is conducting.
How could avoid this problem.
This circuit represent a backplane with two cards. And what I want is:
- J4 closed and J3 open or closed (doesn't...
Do you know if there's any software that could trace the following thing over an image:
- motion vectors
- macroblock partions (h.264)
- image after and before deblocking filter
I'm doing a report about h.264 and mpeg-4 and I need to explain what's happening but i can't use images from other...
Supose that you a have a 1GHz signal (LVDS SERDES type).
For the same trace in the board what via, VIA26 or VIA50, gets me the best resultsin terms of EMC, signal integraty, delay, etc. ?
Any simulator for this kind of stuff?
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