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give me approch for making protection circuit for our board
@copilot give me approch for making protection circuit for our board
2y
Sure, I can give you a general approach for designing a protection circuit for your PCB. First, it's important to determine what types of protection your circuit might require. This typically depends on how the board will be used and what kind of electrical stresses it could be exposed to. Here are the most common types of protection used in electronic boards:
- Overvoltage protection (e.g., using zener diodes, transient voltage suppression diodes, or voltage clamping ICs)
- Overcurrent protection (e.g., using fuses or polyfuse resettable fuses, or current-limiting ICs)
- Electrostatic Discharge (ESD) protection (e.g., using ESD suppression diodes)
- Reverse polarity protection (e.g., with diodes or MOSFET for low power loss)
- Overtemperature protection (e.g., using thermistor sensors or thermal shutdown ICs)
Here's an overall approach to incorporate these protective measures into your circuit design:
- Determine the types of protection needed: This is based on the environment where the PCB will be used.
- Choose appropriate components: Depending on the type of protection you need, there could be several different components to choose from.
- Place components appropriately in your schematic: In general, protection components should be placed at the points where potential damage could occur. This is typically at input/output pins or other exposed connections.
- Build and Test the Circuit: Prototyping and testing are essential parts of any design process. Testing could involve applying over voltages, reversing power supply polarity, or simulating ESD events to verify the circuit can withstand these.
Remember to consider not just the protection goals but also the trade-offs involved, such as cost, board space, and impact on performance. I'm here to help you design the specifics once we determine what types of protection circuits you need.
2y
2
how can make 3.3 buck converter
how can make 3.3 buck converter
2y
7
my circuit is ockay or not
@copilot my circuit is ockay or not
2y
Based on the description of your project, it's hard to definitively say if your circuit is okay or not because there are many factors involved, such as the intended functionality, the specific components used and their specs, signal types, external inputs/outputs, and power requirements, among other things.
However, based on the available information, I can make a few observations:
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Resistor R1 is connected between a power net (PowerNet1) and a net with diode D1 and transistor Q1.
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Diode D1 (specifically a zener diode based on its part number) is also in this network, seemingly providing some kind of voltage regulation, assuming PowerNet1 is a voltage source.
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Transistor Q1 appears to be in a common emitter configuration with base signal coming from the same net where R1 and D1 are present, but its collector (Q1:C) and emitter(Q1:E) nets seem to be unconnected to the rest of the circuit. This configuration might not give the expected results.
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Resistor R2's pin (R2:P1) seems not connected to any other component or power net. Its other pin is also not listed, making it non-functional in this current circuit configuration.
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There is no path for current to return to the power source. A common ground or a complete loop is necessary for a functioning circuit, but does not appear to be present in your current configuration.
To help further, I would need to know the intention of your design or the functionality you're striving to achieve. Based on that, I or others could advise on necessary modifications or corrections to your schematic for it to work as expected.
2y
5
i want to make protection circuit for my controller board how can make it
@copilot i want to make protection circuit for my controller board how can make it
2y
There are several strategies you can apply to protect your controller board. Protection circuits can include but are not limited to overvoltage protection, overcurrent protection, reversed polarity protection, and electrostatic discharge protection.
Let's make a basic protection circuit for common situations. Assuming you're using a DC supply for your controller, and the controller has a supply voltage range between 5V to 12V and maximum current rating of 1A.
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Overvoltage and Under-voltage Protection: To protect against overvoltage, you can use a Zener diode which will break down at a certain voltage and shunt excess voltage to ground. For under-voltage, you could use a voltage supervisor IC like the TI's TPS3839 that gives a clear signal when the voltage gets too low.
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Overcurrent Protection: You can use a resettable polyfuse. A polyfuse increases its resistance significantly (effecting in essence a 'disconnect') when the current exceeds a certain value and turns back to a low resistance state after the high current event finishes. Select a polyfuse with a hold current above your circuit's expected maximum current.
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Reverse Polarity Protection: This can be achieved by using a series Schottky diode at the input which will block any current flowing in reverse direction. However, the diode will introduce some voltage drop (normally around 0.2V to 0.3V).
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Electrostatic Discharge (ESD) Protection: This is more important if your circuit interfaces with the outside world. Human contact can introduce high voltage static charges that can damage the components. You can use devices such as ESD suppressors, which are designed to shunt a static discharge away from sensitive components.
Remember to arrange these protective components at the input power section in the correct order for them to work properly. You should also ensure each protection feature does not interfere with the others.
Such protection circuit can be appropriate for most of simple controller boards. Please review your board's datasheet and requirements thoroughly while designing the protection circuit for any specific needs.
2y
1
U1
Reviews
- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #powerjharwinbarrozo11.4M
- A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibraryjharwinbarrozo15.8k
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
- 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlinkjharwinbarrozo1.2M
- 10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlinkjharwinbarrozo1.1M
Grand Blush Antigravity Battle Room
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Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Digi-Key | $29.00 |
LCSC | $77.94 |
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