Search Engine www.edaboard.com

# 100nf

187 Threads found on edaboard.com: 100nf

## Pi filter calculation

what I don't get here is why are you using a low pass filter? are you trying to get frequencies of 2kHz and below? because if you need that the frequency is exclusively 2kHz (and others among a specific bandwidth or range centered on the 2kHz) you should use a band pass filter. But anyway if you need cut-off frequency for the filter you posted, you

## UCC27425 in place of UCC37422/UCC37421 in this circuit...OK?

So a UCC27425 driving an RC combination of 900uH in series with 100nf, I calculate the impedance to be about 560R which give a power dissipation of about 248mW at 12V. Add the max power dissipation for the PDIP is 350mW. Does this sound about right to you experts - have I done the calculations correctly?

## Optimum decoupling capacitors for Digital ICs

In My PIC Micro Board I am using input output expanders like CD4094 with ULN2803 (O/P) and 74HC165 for input expanding. The outputs may drive LEDs or relays I would like to know what is the rule of thumb(if any) for decoupling capacitors. for each IC I have provided one 100nf close to Supply pins. Should I need any electrolytic caps in parallel

## Decoupling capacitor

What happen if i use 0.001uF of 1uF? Almost certainly those values will be fine too. 100nf is just handy as the rise time isnt too bad..........generally speakign those kind of decouple caps in PSU's are all made the same value and part so that the BOM is i would say that is your answer....BOM minimisation.........

## precise peak detector

Your problem may be due to the very heavy loading on the output (10uF + 10K). The op amp will struggle to keep that load charged right up at the actual peak. Try it with a much smaller capacitor, say 100nf and a 1 meg load, the time constant will be the same. If the real output load must be 10K, then fit a unity gain buffer on the output of t

## PIC18F4550 Unknown USB Device (Device Descriptor Request Failed) on windows 10

are you sure that the crystal configuration (config bits) are correct and D+ and D- lines are not swapped? do you have 100nf capacitor between GND and VCC?

## capacitor or resistos to isolated mixed sources?

The capacitor on the input blocks DC and very low frequency rumbling sounds. 100nf is 0.1uF and a film capacitor produces no distortion but a ceramic or an electrolytic capacitor does produce some distortion. An electrolytic also has a problem called "absorption" where is stores some DC voltage even after it has been shorted. The resistors are not

## Wireless power transmitter with LTC4125

The series 24uH inductor and 100nf cap from the transmitter, and the series 47uH inductor and 33nF cap from the receiver, resonates at the desired frequencies. I would not expect to damage the transmitter without using the receiver resonator load, especially when this is at resonance, because at resonance actually this gives the maximum current at

## Power-on-reset for flip flops?

in your circuit ,for R input, the cap (100nf) in parallel with R9 is redundant. also , you need not have two caps( 10nf and 100nf in parallel in R input). one 100nf is sufficient. the circuit will be in reset state for approx 1millisec. for S input , just tie it to VCC.

## Identify a capacitor

I have this board with a cap marking 711 AJT, See pic attached, My working out say's a 710pF but 3 of my meters say 100nf which is confusing Any ideas ? 123233

## low pass Filter calculation

The two 100nf capacitors in series produce 50nF of capacitance. Then simply calculate the cutoff frequency of the inductance with this capacitance. I think the load produces an interference signal that this filter prevents from spreading to other circuits powered by the battery. The battery does not produce the interference signal, it simply passes

## PIC18F4550 generic HID device not seen by one of the computers

Hey I compiled simple BLINK LED by USB example. The example works well on my every day workstation PC. But when I plug it to the laptop, it says "unknown device" (error code 43). What's wrong, am I forgetting some kind of drivers? I am using example HID Read Write Interrupt (EasyPIC v7 for PIC18F4550). The board c

## Nosie generated by an eby puchased SMPS 9V Module

The 15MHz will be ringing as the SMPS switch turns off. I would suggest you try these in order: 1. Add one or more ceramic capacitors across the DC output, suggest 100nf with short wires. That 470uF output capacitor will have high impedance at 15MHz. 2. add the inductor in the + output but also add a 100nf capacitor AFTER it with it other wire goi

## noice microcontrller

What did you put at RESET signal? you must put a pull up 10k and to cappacitor 100nf and 10uF close to the pin.

## 100nF capacitor charged up to 30V will damage LED array?

If you say the stored energy is 39?J from a 100nf cap, what is the time duration and ESR&ESL of load? Let me make some assumptions to estimate these. The ESR is 1Ω per watt per device.(Tony's rule of thumb)You have a 50W array something like 6S4P using 2W per LED for 6x3.7V for 22Vnom. Thus 2Wx24 LEDs, 6S4P, ESR=6*?/4=0.75Ω .

## [Moved] Schematic didn't work, Why?

YEs the reason the Op failed to get circuit to work , we agree is due lack of split supply on OA's with ground biased shunt. Mid V+ bias required for sgl. supply. Sorry, I misread the 100nf as 100uF, which is why I thought something was wrong in Post #5 Now I see the same as you Audioguru. My Sim showed LPF +14dB peak gain at 16.4Hz Q= 4.7 If

## Maximum transient voltage across C2/C7 calculation?

If we have a power supply to a BTS711L1 High side switch, decoupled by two capacitors in parallel, C2: 220nF/C7: 100nf. The transient test pulse 2a (+37V/+50V, 0.05ms cycles for 500 pulses) with a source impedance of 2 Ohms. How would you calculate the maximum transient voltage across C2/C7?

## Feed-through capacitors in RF

Actually using an SMA connector for DC supply gives the advantage placing more decoupling capacitors in parallel (with various values to increase decoupling frequency range). Usual values for HF, VHF, UHF range are: 100pF, 1nF, 10nF, 100nf.

## Altium designer annotation problem.

Hi, I have a problem with the automatic annotation of Altium (Tools|Annotate Schematics...). I want to group components with the same comment and footprint (100nf/0402, 220NF/0603 and 220NF/0402). Please see the steps in the attached pictures. Altium only does the 'order of processing' correct and doesn't group the components. The annotation in

## Capacitance power prefixes on RF schematics

Yes, 0.01 = 0.01uF = 10nF, and also very often used is: 0.1 = 0.1uF = 100nf Some RF schematics use just a number for low value capacitors as: 2.2 for 2.2pF, or 4.7 for 4.7pF