What is a type of technology that can be attached to a tag and used to identify postal packages

An incoming signal is at a frequency of 500kHz. This signal needs to be acquired and all other signals attenuated. Design a pass

Finger [1]

Answer:

C_h = 0.166 nF

C_L = 0.153 nF

Explanation:

Given:

- Ideal frequency f_o = 500 KHz

- Bandwidth of frequency BW = 40 KHz

- The resistance identical to both low and high pass filter = 2 Kohms

Find:

Design a passive band-pass filter to do this by cascading a low and high pass filter.

Solution:

- First determine the cut-off frequencies f_c for each filter:

f_c,L for High pass filter:

f_c,L = f_o - BW/2 = 500 - 40/2

f_c,L = 480 KHz

f_c,h for Low pass filter:

f_c,h = f_o + BW/2 = 500 + 40/2

f_c,h = 520 KHz

- Now use the design formula for R-C circuit for each filter:

General design formula:

f_c = 1 /2*pi*R*C_i

C,h for High pass filter:

C_h = 1 /2*pi*R*f_c,L

C_h = 1 /2*pi*2000*480,000

C_h = 0.166 nF

C,L for Low pass filter:

C_L = 1 /2*pi*R*f_c,h

C_L = 1 /2*pi*2000*520,000

C_L = 0.153 nF

7 0

3 years ago

What is the capacity of the machine in batches?

Valentin [98]

28 batches per day and the setup time is five minutes

3 0

4 years ago

g What property of flip-flops distinguishes them from latches? A. Flip-flops will never change state more than once per clock cy

kogti [31]

Answer:

A. Flip-flops will never change state more than once per clock cycle, but latches can change state multiple times during a clock pulse.

Explanation:

Even though both flip-flops and latches are sequential circuits (which means that the present outputs don´t depend on the current value of the inputs and outputs but on the previous ones, so it is said that these circuits have memory), the flip-flops state changes are only valid when a clock pulse is present, which means that it can´t change state more than once per clock cycle .

Latches, instead, change state no sooner a input level changes, so it doesn´t need for a clock pulse to be present.

5 0

3 years ago

It is desired to produce and aligned carbon fiber-epoxy matrix composite having a longitudinal tensile strength of 610 MPa. Calc

julia-pushkina [17]

Answer:

volume fraction of fibers is 0.4

Explanation:

Given that for the aligned carbon fiber-epoxy matrix composite:

Diameter (D) = 0.029 mm

Length (L) = 2.3 mm

Tensile strength ( $\sigma_{cd}$ ) = 610 MPa

fracture strength ( $\sigma_f$ ) = 5300 MPa

matrix stress ( $\sigma_m$ ) = 17.3 MPa

fiber-matrix bond strength ( $\tau_c$ ) = 19 MPa

The critical length is given as:

$L_C=\sigma_f(\frac{D}{2\tau_c} )=5300*10^6(\frac{0.029*10^{-3}}{19*10^6} )=8.1*10^{-3}=8.1mm$

Since the critical length is greater than the length, the aligned carbon fiber-epoxy matrix composite can be produced.

The longitudinal strength is given by:

$\sigma_{cd}=\frac{L*\tau_c}{D} .V_f+\sigma_m(1-V_f)$

making Vf the subject of the formula:

$V_f=\frac{\sigma_{cd}-\sigma_m}{\frac{L*\tau_c}{D} -\sigma_m}$

Vf is the volume fraction of fibers.

Therefore:

$V_f=\frac{\sigma_{cd}-\sigma_m}{\frac{L*\tau_c}{D} -\sigma_m}=\frac{610*10^6-17.3*10^6}{\frac{2.3*10^{-3}*19*10^6}{0.029*10^{-3}}-17.3*10^6} } =0.4$

volume fraction of fibers is 0.4

8 0

3 years ago

A rigid, sealed cylinder initially contains 100 lbm of water at 70 °F and atmospheric pressure. Determine: a) the volume of the

soldier1979 [14.2K]

Answer:

Determine A) The Volume Of The Tank (ft^3) Later A Pump Is Used To Extract ... A rigid, sealed cylinder initially contains 100 lbm of water at 70 degrees F and atmospheric pressure. ... Later a pump is used to extract 10 lbm of water from the cylinder. The water remaining in the cylinder eventually reaches thermal equilibrium ...

3 0

3 years ago

What is a type of technology that can be attached to a tag and used to identify postal packages ​

What is a type of technology that can be attached to a tag and used to identify postal packages