Feedback Phone Cases - iPhone and Android
Description: A schematic diagram illustrating a control system with various components labeled 'P', 'C', 'F', 'y', 'r', 'u', and 'e'. Arrows indicate signal flow. Below the diagram is a mathematical equation for H(s) involving functions P(s), C(s), and F(s). The overall aesthetic is minimalist with white line work on a black background.
Description: A black background with white text and a white outline of a phone receiver with sound waves emanating from it. The text reads, "THE MOST IMPORTANT QUESTION IS: ARE YOU SATISFIED WITH YOUR CUSTOMER SERVICE?". The text is stacked in multiple lines with a horizontal line separating the first two lines from the rest.
The Most Important Question Is: Are You Satisfied With Your Customer Service? Phone Icon Phone Case
by DRASA STUDIO DESIGN
$17 $23
Description: A black background with bold orange text at the top reads "UNDERSTANDING ENGINEERS". Below, seven numbered points with bold headings explain engineer's traits: OPTIMIZATION, PERFECTION, DOCUMENTATION, TEAMWORK, DEADLINES, FEEDBACK, and THE ENGINEER'S FIX. A white wrench and three gears are depicted on the right side.
Description: A white line diagram on a black background illustrating a control system. It features a summation circle with inputs 'r' and 'e', and outputs 'r', 'e', and 'u'. Two blocks labeled 'C' and 'F' are connected, receiving and sending 'y' signals. Another block labeled 'P' is grounded. Below the diagram, the equation 'H(s) = H(s) / 2' is displayed.
Description: A schematic diagram of an operational amplifier is shown on the left with labels VIN, RF, RG, and VOUT. To the right, white text reads "I ONLY GIVE NEGATIVE FEEDBACK", with a waveform integrated into the word "ONLY".
Operational Amplifier I Only Give Negative Feedback Phone Case
by phsycstudiocoly
$17 $23
Description: A scientific diagram showing a closed-loop control system with blocks labeled C, P, and F. Arrows indicate signal flow from inputs r and y to outputs e, u, and y. Below the diagram are two identical equations for the transfer function H(s) = y(s)/r(s) = C(s)P(s) / (1 + C(s)P(s)F(s)).
Control System Block Diagram and Transfer Function H(s) Phone Case
by DORI STORE
$17 $23
Description: A circular emblem with a thick red border on a black background. Inside, two red stick figures are positioned facing each other. One figure points at the other, with lines indicating speech or aggression. The text "WARNING TO AVOID INJURY" curves along the top inner edge of the circle, and "DO NOT TELL ME HOW TO DO MY JOB" curves along the bottom inner edge.
Warning To Avoid Injury Do Not Tell Me How To Do My Job Stick Figures Argument Phone Case
by dannyook
$17 $23
Description: A black background displays white text reading "REVIEWS" across the top. Below, in smaller white text, it says "The chef was cute, would definitely eat here again." At the bottom, the number "5.0" is accompanied by four green stars.
REVIEWS 5.0 Stars The chef was cute, would definitely eat here again. Phone Case
by christian king studio
$17 $23
Description: Simple white letters on black background: "positive feedback only please". La la la, can't hear you. Floating around in a bubble of denial. Everything is rosy and full of unicorns. Tell me I'm pretty.
"positive feedback only please" in plain white letters - it's worth a try Phone Case
by TheBestWords
$17 $23
Description: **People Rating Absolute Nightmare Would Not Recommend** Humorous design depicting utter dissatisfaction. A visual statement for those deeply unimpressed. Express yourself!
People Rating Absolute Nightmare Would Not Recomd Phone Case
by Reffcartoon
$17 $23
Description: This is a fantastic choice that is appropriate for us with a humorous retro style. Show your personal style. There are many more colors available from us. A holiday or special occasion present for anniversaries, Christmas, Halloween, Father's Day, Mother's Day, and birthdays.
Oh Sorry, When I Said I'm Open To Feedback I Meant Give Me Compliments Phone Case
by Field & Farm Threads
$17 $23
If I Wanted Feedback Sound Engineer Music Sound Guy Phone Case
by likkouss777
$17 $23
Description: Sarcasm meets science in a pun that faculty and engineering students will appreciate.
I Only Give Negative Feedback Operational Amplifier Science Electrical Phone Case
by It's Over
$17 $23
