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how low is low impedence
bobgardner wrote:The datasheet for the power supply you mentioned called for 220uf cap abobe 5A. 100uf
Monday, 28 March 2011 - 15:53
how low is low impedence
alwelch wrote:Low impedance caps are spec. in milliohms, well under an ohm of resistance. If you look at Digikey or Mouser you can locate them. The voltage rating is usually...
Monday, 28 March 2011 - 15:47
how low is low impedence
Data sheet calls for 330ufd. C1. Note the TVS1 over voltage clamping diode. You can get overshoot from SMPS on startup and the clamping diode or zener is a darn good idea to...
Monday, 28 March 2011 - 15:13
how low is low impedence
Low impedance caps are spec. in milliohms, well under an ohm of resistance. If you look at Digikey or Mouser you can locate them. The voltage rating is usually around 12 to 25...
Monday, 28 March 2011 - 14:29
Really newbish potentiometer question
Put 300 ohms or more in the wiper leg of the pot to the ADC input. Also you might connect the top of the pot to the ADC reference source which should be better regulated than VCC...
Sunday, 27 March 2011 - 14:11
Max232 Problem
Do you have 5 caps attached to the chip per the data sheet? Do you have a scope or logic probe to observe if your AVR is transmitting? Do you have an interupt handler set up to...
Sunday, 20 March 2011 - 14:37
New line follower circuit..!
What were you hoping the circuit would do? If you can explain what your desired function is then we can offer suggestions. Also tell us about the inputs that go into the LM339....
Monday, 7 March 2011 - 15:00
Inductor former
Here they offer 30 amps at 13 uH. http://www.bitechnologies.com/pd...
Saturday, 26 February 2011 - 16:50
Voltage reference ic
Voltage References should have low drift with temperature changes and low long term drift. In addition they would have power supply rejection. They are used for ADC reference...
Saturday, 26 February 2011 - 16:36
AVR control of Halogen bulb power, possible?
There are nice resistors (Vishay Dale RH series for one) that come with extruded heat sinks with mounting holes in the 15 watt size. These are sealed as described. I would use one...
Saturday, 19 February 2011 - 13:50
AVR control of Halogen bulb power, possible?
Be aware that halogen bulbs are supposed to go into a halogen cycle to redeposit the tungsten onto the filament. If you do not run enough current in the bulb it will eventually...
Saturday, 19 February 2011 - 01:25
Micro with 20-bit A/D?
Reference temperature drift is a big consideration at 24-bits. Linear Tech has several apnotes on circuit layout at 20-bits with a lot of discussion regarding copper solder...
Tuesday, 8 February 2011 - 14:15

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