Notifications
Clear all
Search result for: WA 0812 2782 5310 Total Biaya Membangun Rumah Minimalis Sederhana Tp Mewah Murah Klaten
Page 1 / 2
Next
| # | Post Title | Result Info | Date | User | Forum |
| Answer to: New Pi Pico 2 by Raspberry Pi—What are your opinions? | 8 Relevance | 2 years ago | Admin | RPi Pico | |
| ... us a Total of 12 state machines. 4 more than the original Security features Price- just $5 1 more ADC(total 4) and 8 more PWM(total 24) then the original Pico. Supports C/C++, Arduino IDE, Circuitpython and Micropython Now Disadvantages: Still no USB-C No reset button It would have been better if there WAs a built-in WiFi chip(link Pico W) if they WAnt to compete with ESP32. But of course, they will sell it separately as a new board and call it Pico 2W. Please add to this if you think there are more. Also, will publish an in-depth article on Pico 2 ... | |||||
| RE: Why are resistors in parallel preferred over a single resistor in some circuits? | 5 Relevance | 1 year ago | Chiris | Circuits and Projects | |
| @bryan Using multiple resistors in parallel instead of a single resistor can offer several advantages, depending on the specific requirements of the circuit. Here are some key benefits and scenarios where this technique is commonly applied: 1. Power Dissipation: Advantage: When resistors are connected in parallel, the overall power dissipation is shared between the individual resistors. This can prevent overheating or excessive power dissipation in a single resistor, especially in high-power applications. Example: In power supplies or motor driver circuits, where large amounts of current flow through resistors, parallel resistors help distribute the heat more evenly, preventing one resistor from getting too hot and potentially burning out. 2. Improved Thermal Management: Advantage: Distributing the current across multiple resistors can help manage heat more effectively. A single high-power resistor may have limitations on how much power it can dissipate before it reaches unsafe temperatures. By using parallel resistors, the heat is spread out, improving overall thermal performance. Example: In high-power resistor networks used in voltage dividers or current sensing, parallel resistors allow better thermal management without the need for specialized heat sinks. 3. Availability of Components: Advantage: It may be more practical or cost-effective to use multiple standard-value resistors than to source a single resistor with the required value, especially in cases where a precise resistance value is not readily available in a high-power rating. Example: Sometimes a designer may need a resistor with a specific value that is not commonly available, but by combining resistors of different standard values in parallel, the desired resistance can be approximated. This can be more convenient than ordering a custom resistor. 4. Increased Power Rating: Advantage: Multiple resistors in parallel increase the Total power handling capability of the resistor network. The power rating of the parallel combination is effectively the sum of the individual power ratings of each resistor. Example: For example, two resistors each rated for 1W in parallel can handle up to 2W of power in Total, which would not be possible with a single 1W resistor. 5. Tolerance and Precision: Advantage: In some cases, using multiple resistors can help achieve a more precise overall resistance value, especially if high tolerance resistors are used in parallel. The parallel combination may help average out the tolerance errors of individual resistors, leading to a more predictable and consistent resistance. Example: In precision circuits, such as voltage dividers in analog signal processing, multiple resistors with tight tolerances might be combined to achieve the desired resistance value with reduced error margins. 6. Redundancy and Reliability: Advantage: Using parallel resistors can improve the reliability of the circuit. If one resistor fails (e.g., due to overheating), the remaining resistors in the parallel configuration can continue to carry the current, which can help prevent a complete circuit failure. Example: This is especially useful in mission-critical applications where reliability is key, such as in automotive or aerospace circuits. Common Applications: Power Dissipation: Power supplies, motor drivers, and high-current load resistors. Thermal Management: Voltage dividers and high-power applications. Precision Circuits: Applications where multiple standard resistors are used to approximate a desired resistance with minimal tolerance error. Redundancy: Safety-critical applications where resistor failure could compromise circuit performance. Conclusion: Using resistors in parallel is a useful technique, especially when dealing with high power, thermal management, or component availability. It allows for better distribution of power, increased reliability, and often better thermal performance. While it might seem simpler to just use a single resistor, the flexibility, safety, and performance benefits make this approach preferable in certain scenarios. | |||||
| What’s the practical limit on daisy-chaining shift registers? | 3 Relevance | 7 months ago | Nitin arora | Theoretical questions | |
| I know that shift registers like the 74HC595 can be daisy-chained to expand outputs, but I’m wondering where the practical limit lies. Is the limit mainly due to propagation delay and timing issues, or do factors like power consumption, loading on the data and clock lines, and signal integrity also become major concerns as the chain gets longer? Are there any general guidelines (such as maximum number of devices or Total outputs) before performance or reliability starts to drop? I’d be interested to hear from anyone who has pushed the number of chained shift registers in a real project. | |||||
| RE: Pi Pico VS UNO: Which one is best for beginners? | 3 Relevance | 1 year ago | Admin | Arduino | |
| @sophie Fair points! The Pico is definitely a solid option, especially if you’re into Python. That said, I still think the Arduino Uno is easier for Total beginners, just because there’s WAy more support, tutorials, and libraries. If you ever get stuck, chances are someone’s already solved it. Plus, working with C/C++ on Arduino isn’t as scary as it sounds—tons of example codes make it pretty straightforward. | |||||
| RE: What exactly is PWM resolution ? | 3 Relevance | 1 year ago | Sebastian | Hardware/Schematic | |
| Good point by @FullBridgeRectifier . Just to clarify for anyone new to this: when we say “divide by 255 instead of 256,” it’s because we’re looking at the maximum value the PWM can take, not the Total count of values. This WAy, your duty cycle calculations always correctly reach 100%. | |||||
| How do I choose the right op-amp for audio applications? | 3 Relevance | 5 months ago | Roshan | Theoretical questions | |
| When it comes to audio circuits, I’ve seen many people emphasize the importance of choosing the right op-amp, since it can significantly affect noise, distortion, and overall sound quality. What factors should be considered when selecting an op-amp specifically for audio applications? For example, how important are parameters like slew rate, input noise, bandwidth, or THD+N (Total Harmonic Distortion + Noise)? Are there certain op-amp families that are generally preferred for high-quality audio, and how do they compare to using general-purpose op-amps? | |||||
| Answer to: What’s the practical limit on daisy-chaining shift registers? | 3 Relevance | 7 months ago | Rahav | Theoretical questions | |
| Daisy-chaining a large number of shift registers, such as the popular 74HC595, is technically possible, but there are practical limitations you need to consider. Each shift register introduces a propagation delay, and as the chain gets longer, these delays accumulate. When chaining around 100 shift registers, the Total propagation delay can become significant, requiring you to slow down the clock frequency considerably to ensure reliable data transfer. High-speed operation becomes nearly impossible at this scale without special measures. Signal integrity is another major concern. Longer chains increase the length of the data and clock lines, which can result in voltage drops, reflections, and noise issues. To maintain clean signals, you will likely need to use buffers or repeaters at certain points in the chain, along with careful PCB layout and proper decoupling. If your design truly requires controlling such a large number of outputs, consider whether a different approach might be more suitable. For example, I²C or SPI GPIO expanders with unique addressing can drastically reduce complexity. Alternatively, you could use multiple smaller chains driven by separate microcontroller pins. | |||||
| Answer to: Shift Register Cascading Issues | 3 Relevance | 8 months ago | Tech Geek | Theoretical questions | |
| This kind of issue is quite common when cascading multiple 74HC595 shift registers. First, make sure you're shifting out the correct number of bits—8 bits per chip—before pulsing the latch pin. Timing can also be a factor, so try adding a small delay (like delayMicroseconds(1)) after the latch pulse. Signal integrity often becomes a problem as more ICs are added, especially with long wires or breadboards—keep connections short, use 100nF decoupling capacitors near each chip, and consider adding 100Ω series resistors on data and clock lines. Also, check that all chips share a common ground and that your power supply can handle the Total current draw. Lastly, ensure your shiftOut() direction (MSBFIRST or LSBFIRST) matches your wiring. These steps usually solve most inconsistent behavior when chaining multiple 74HC595s. | |||||
| RE: new to electronics and needing some guidance with a circuit . 555 LED lights | 3 Relevance | 8 months ago | Admin | Circuits and Projects | |
| Hi! I checked the circuit on TinkerCad. There were some mistakes, like wrong capacitor connection and value. Here's the edited one: A couple of points worth mentioning here: 1. On running the simulation, TinkerCad shows too much current drawn from the IC and may damage it. 2. This is true if you are running it continuously. In this case, all LEDs are ON at the same time for a very small duration, so it somehow works. 3. Still, not a good idea in the long run. I will suggest: 1. Use a 220-ohm resistor instead of 100. And connect two LEDs per pin to only one resistor. Meaning a Total of 8 resistors for an 8-pin. This will reduce the overall current draw from the IC and per pin as well. 2. Better use 330 ohm..but not that it will reduce the brightness of the LEDs further. | |||||
| Need help with Power Supply for 12V 4watt Motor | 3 Relevance | 1 year ago | getta | Circuits and Projects | |
| Hi there, I am a Total noob with electronics so figured I'd ask here for some help. I just bought a synchronous motor and need to power it. The motor is 12 volt AC 4 WAtt 50Hz. Can someone point me to what outlet and inverter (if necessary) is needed to power this motor, whether it be an outlet or battery powered? Here is a link to the motor I am using. Thank you for any help you can provide! | |||||
| RE: What exactly is PWM resolution ? | 3 Relevance | 1 year ago | FullBridgeRectifier | Hardware/Schematic | |
| @ankunegi The answer is on point but I think there's a mistake in your calculation. To calculate the duty cycle, we have to divide it by 255(the maximum value) and not 256(The Total no. of steps). For example: A 2-bit PWM signal has 4 possible steps: 0,1,2 and 3 corresponding to 0%, 33.33%, 66.67% and 100% duty cycle. You get this by dividing by 3, not 4. If you divide it by 4, you will get 25%. Which means 0%, 25%, 50% and 75%. See, you are not getting 100% duty cycle in this case. | |||||
| RE: Is It Safe to Control 15 LEDs Directly from Arduino Pins? | 3 Relevance | 1 year ago | Admin | Hardware/Schematic | |
| 1. Yes you can. But then you have to turn ON only one LED at a time. 2. It is simple. If each LED consumes 12mA we get, Total current= 12X15 = 180mA, which is below the maximum rating. Now resistor value = 5V/12mA = 416 ohms. | |||||
| Answer to: Why Does analogWrite Use a 0-255 Range for PWM? | 3 Relevance | 2 years ago | Sebastian | Programming | |
| To the point answer by Techtalks. Just WAnt to add one important point here: The PWM pins on UNO have an 8-bit resolution. This gives us 256 discrete duty cycles, since 2^8 = 256. Example: 2 bit means 4 possible duty cycles. For PWM, they would be: 0, 33.33%, 66.66%, and 100%. Similarly, 4-bit means 16 duty cycles, and 8-bit means 256 cycles. Now why does the PWM range from 0 to 255 and not 256? Because when you count 0, the Total values from 0 to 255 are 256. | |||||
| Answer to: What exactly is PWM resolution ? | 3 Relevance | 1 year ago | catElectronics | Hardware/Schematic | |
| To put this PWM resolution concept into a practical context: If you’re dimming an LED with an Arduino UNO’s 8-bit PWM, you might see noticeable brightness steps when changing the duty cycle. This is because each step is about 0.4% of the Total brightness. With the ESP32’s 16-bit PWM, each step is only 0.0015%, so the LED brightness change is much smoother and almost imperceptible. This is crucial if you’re working on projects that require precise control, like mood lighting or audio signal modulation. But keep in mind, that the lower frequency at higher resolutions might introduce visible flicker in LEDs, so you’ll need to find a balance between resolution and frequency depending on your application. | |||||
Page 1 / 2
Next
