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Help with RF Generator Repairview story

http://forum.allaboutcircuits.com – Hello - thanks in advance to everyone for their help and guidance. I have several SEBRA RF Generators that are used in conjunction with a sealing head to seal off PVC tubing in medical device assembly. The generators are starting to fail (transformers, resistors and 10 turn dials primarily), and I am hoping to get some help locating a repair facility? (Embedded)

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Question about transientsview story

http://forum.allaboutcircuits.com – Here's a circuit where the switch has been closed for a long time, so that Vc(t) is fully charged. At t=0 the switch opens. R1=R2. When doing the transient analysis for what happens when t>0: I would assume the the current goes in a clockwise direction in the loop betwen the capacitor and the resistance R2. (Embedded)

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Energy bands in solidsview story

http://forum.allaboutcircuits.com – Hello everyone, I am trying to learn about the energy bands which forms when atoms interact with each other. However I am unable to actually visualize the whole picture. As per my understanding I have created a diagram which I think might be correct way of visualizing the whole picture. Can anyone please tell me whether I am correct or wrong. (Embedded)

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Xilinx coolrunner startup currentview story

http://forum.allaboutcircuits.com – Hi, I plan to use the coolrunner II CPLD in a very low power system, and I am not sure if the datasheet is not missing the startup current, as other companies state this number (could be beacuse their chips are flash based and the coolrunner seems to be eeprom based, but you never know). (Embedded)

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Calculating amplitudes, angular periods, trig styleview story

http://forum.allaboutcircuits.com – Okay. Finals week. The one chapter I was stuck at home sick is also one of the angriest. Would like some help working through these. If someone would be willing to give an answer or two and be procedural, I'd love you forever. Example problems: "Give amplitude and angular period for the following curves: y = 5sin amp=____ ang. period=____ y = 3.519 amp=____ ang. (Embedded)

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JTAG programming (Maxim chips)view story

http://forum.allaboutcircuits.com – I just received my first PCB (not yet populated) and I'm trying to figure out if I made an error in judgement when it comes to a JTAG programmer, before I spend the time + money to continue. I need t program one of the chips on the board (Maxim MAXQ610A) via JTAG. (Embedded)

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Is building a computer for a first year project feasible?view story

http://forum.allaboutcircuits.com – Hi, I'm a first year undergrad', and with every project I always get excited. For the final year I want to design and build a computer, so this gives me, roughly, two years to prepare. This computer will not be a "kit". The only kit part to it will be the power supply, I/O, and memory. (Embedded)

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Principia! The last game you'll ever need!view story

http://forum.allaboutcircuits.com – *I do not represent Bithack games in any way. So one month ago I couldn't tell the difference between a FIFO and a Debugger and had no reason to join such a fine upstanding community, but now... I have Principia! (Embedded)

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OpAmpPowSupply?view story

http://forum.allaboutcircuits.com – Hello! and thank you! What is a good way to determine a power supply voltage for a given OpAmp? If I intend to have a few volt at maximum signal to manage, what real difference does it make to create a power supply with a voltage larger than the OpAmp is designed to work with? (Embedded)

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RF Oscillators and Amplifiers Helpview story

http://forum.allaboutcircuits.com – I'm working on designing and building a Cyclotron which includes an RF oscillator sub-system. Since we're high school students and lack funds, we're building the system from scratch. I've done a significant amount of research on circuits and electronics, having started from little knowledge, and am still having trouble wrapping my head around RF oscillators and linear amplifiers. (Embedded)

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Who knows about available surveillance cameras?view story

http://forum.allaboutcircuits.com – A customer needs a surveillance camera. If I could have anything I want, it would be battery operated, have motion detection ability, and use the local wi-fi to post a video on a computer inside the house or a website to be accessed later. What's available in retail version and how close can I get to this magical thing I have described? (Embedded)

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SSRs appear not to work!view story

http://forum.allaboutcircuits.com – Hello. This is my first post on here, so be gentle. I have a project which has almost succeeded. It's an internet-enabled controller for a wet-electric storage heating system using a Raspberry Pi. (Embedded)