Standard LED Forward-Voltage Tester
Budget: $250 – $750 USD
This is my first circuit card.
Q.; Which exact PSpice version are you using today, and do you want full compatibility with a specific student edition release?
A. Software Version: Student 9.1
Q. Can you send the current PSpice project, PCB layout files and the original BOM in their native formats?
A. I do not have any current PSpice project, PCB layout files, and the BOM is mine.
Q. What input voltage range, load range and ambient temperature range should the circuit be guaranteed to survive and operate in?
A. The input is a standard 9DCV battery. The load range should be 7v - 9v. The ambient temperature range is 40F-120F
Q. Have you seen any real failures or “hot spots” on the existing board (burned parts, discolored PCB, very hot components) that you want me to focus on first?
A. This is my first prototype.
Q. Do you have an approved parts list or preferred manufacturers, or should I simply avoid locking parts to a single vendor and give at least two good options where possible?
A. I do not have list of approved manufacturers. I am looking for the cheapest and giving the customer the best for the value.
Q. Which PCB design tool was used for the current board so I can update the layout correctly and export Gerbers in the format your manufacturer expects?
A. This is the initial PCB design tool. I will make my own circuit board.
Q. Are there any mechanical limits I must not change, such as board outline, mounting holes, connector positions or keep-out zones?
A. I sent you a diagram of the mount holes and the wiring for the circuit board.
Q. Do you already have any thermal measurements or IR camera images of the current board, or should I rely only on simulation and calculated power dissipation?
A. None Just us the simulation and calculate the power dissipation.
4:19 A
Acceptance
I’ll prototype from your files, plug in a red, green, and blue standard LED, and check that the reading sits within spec compared to my bench DMM.
Let me know any questions about current level, reference source, or display choice—the simpler the build, the better.
Q.; Which exact PSpice version are you using today, and do you want full compatibility with a specific student edition release?
A. Software Version: Student 9.1
Q. Can you send the current PSpice project, PCB layout files and the original BOM in their native formats?
A. I do not have any current PSpice project, PCB layout files, and the BOM is mine.
Q. What input voltage range, load range and ambient temperature range should the circuit be guaranteed to survive and operate in?
A. The input is a standard 9DCV battery. The load range should be 7v - 9v. The ambient temperature range is 40F-120F
Q. Have you seen any real failures or “hot spots” on the existing board (burned parts, discolored PCB, very hot components) that you want me to focus on first?
A. This is my first prototype.
Q. Do you have an approved parts list or preferred manufacturers, or should I simply avoid locking parts to a single vendor and give at least two good options where possible?
A. I do not have list of approved manufacturers. I am looking for the cheapest and giving the customer the best for the value.
Q. Which PCB design tool was used for the current board so I can update the layout correctly and export Gerbers in the format your manufacturer expects?
A. This is the initial PCB design tool. I will make my own circuit board.
Q. Are there any mechanical limits I must not change, such as board outline, mounting holes, connector positions or keep-out zones?
A. I sent you a diagram of the mount holes and the wiring for the circuit board.
Q. Do you already have any thermal measurements or IR camera images of the current board, or should I rely only on simulation and calculated power dissipation?
A. None Just us the simulation and calculate the power dissipation.
4:19 A
Acceptance
I’ll prototype from your files, plug in a red, green, and blue standard LED, and check that the reading sits within spec compared to my bench DMM.
Let me know any questions about current level, reference source, or display choice—the simpler the build, the better.