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Check that none of the unconnected pins require pull-up or pull-down resistors t...
2y
I see that you have an LM358 Op Amp (Designator U3) in your schematic. For certain applications, it's crucial to provide pull-up or pull-down resistors on opamps. Nevertheless, the suggestion to use pull-up or down resistor will depend on the schematic and the application itself.
For the ZMPT101B voltage transformer modules (Designator: U1 and U2), the pins typically don't require pull-down or pull-up resistors. However, this again depends on the specific application of the circuit.
Keep in mind that pull-up and pull-down resistors may be required for various other ICs, digital logic, and GPIOs in bigger projects. But in the current schematic, looking at the components you have, it doesn't seem to be like any of them mandatorily requires pull-up or pull-down resistors for the basic operation.
Remember, this is based on a generic understanding of these components. Always refer to the datasheet of components for more specific information and proper function. In case there's a more specific application you're aiming for, please clarify and I'd be glad to further assist you.
2y
3
id like to build a power supply monitoring circuit that deffirentiates between p...
2y
Sure, you can start building the power supply monitoring circuit using these components within Flux:
- AC Voltage Sensors (for both Grid and Generator): AC voltage sensors can detect whether AC voltage is present, which can be used to differentiate between power grid supply and backup generators. For example, a ZMPT101B module can be used for this purpose.
- Op-Amps: You can use these to compare the output from the voltage sensors. If one voltage sensor detects voltage but the other does not, that would mean power is being supplied from the one which does. LM358 is a feasible option.
- Diodes: Protect the rest of the circuit from voltage spikes that might occur when switching power sources.
- LEDs: A green LED will light up when the power grid is supplying power, and a yellow LED will light up when the backup generators are supplying power.
- Resistors: Required for LED current limiting and to set up the right operational amplifier gain.
Assuming you are using all of these components, here are some connection instructions:
- Connect your first AC Voltage Sensor (let's name it VS1) to monitor your power grid supply.
- The second AC Voltage Sensor (VS2) should be connected to monitor your backup generator.
- The output of VS1 and VS2 are then connected to two different op-amps respectively within the LM358. This will allow the op-amps to monitor and compare the outputs.
- Setup the op-amps in such a way that they output a 'High' signal when AC voltage is detected and 'Low' when not detected.
- Now, connect two diodes (D1 and D2) to the outputs of the op-amps. Connect the cathode of the diode D1 to the Green LED through a current limiting resistor (R1), and the anode to the op-amp that is connected to VS1.
- Similarly, connect the cathode of diode D2 to the Yellow LED through another current limiting resistor (R2), and the anode to the op-amp that is connected to VS2.
- Finally, connect the other end of the LEDs to a appropriate power supply ground.
Please customize these instructions based on your actual components and circuit parameters, and update this schematic so I can provide further guidance. Also, the component names here (VS1, VS2, etc.) are placeholder names. When you add the components to your Flux project, make sure to use the designator system to label them properly (like VC1, VC2 for voltage comparators, etc.).
2y
ANALYSE CURRENT COMPONENTS AND TELL ME HOW TO COONECT THEM
2y
Given the project components at hand, here's how you can connect them to detect the power source and indicate the type of power source through LEDs:
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Connect the AC voltage sensor U1 to the power grid line. Connect U1:~2 to U1:~4, since both these pins serve as output in this component.
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Connect the other AC voltage sensor U2 to the backup generator line. Connect U2:~2 to U2:~4, same reason as above.
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Connect the output of U1 to one of the inputs of op-amp U3. Connect U1:~3 to U3:+IN 1.
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Similarly, connect the output of U2 to the second op-amp input. Connect U2:~3 to U3:+IN 2.
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Connect U3:OUT 1 to LED1:A through a resistor R1. Connect R1:P1 to U3:OUT 1, and R1:P2 to LED1:A.
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Similarly, connect U3:OUT 2 to LED2:A through a resistor R2. Connect R2:P1 to U3:OUT 2, and R2:P2 to LED2:A.
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Connect the cathodes of both LEDs to power supply ground. Connect LED1:K to GND and same for LED2.
The idea here is to use the voltage sensors to detect the AC main or backup generator and then use op-amp as comparator to output a voltage depending on the signal. Depending on the output of the op-amp, one of the LEDs will light up indicating the current power source.
Please note that all the other required connections such as power supply (batteries), GND, and other necessary components like capacitors are not mentioned in the question and need to be added to complete the circuit. Also, since I don't have the information on input voltage levels, you might have to adjust the value of resistors R1 and R2, to ensure appropriate current to the LEDs.
Let me know if you need further help or suggestions about this.
2y
1
explain this project.
2y
This project seems to be a circuit that sounds like a universal remote powered by two different voltage sources. Let's break down the components:
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Voltage Sources (V1, V2): Your project has two voltage sources. V1 has a peak voltage of 5V, and V2's peak voltage isn't specified so I'll assume a typical value of 5V. Both have a frequency of 800Hz.
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Resistors (R1, R2, R3, R4): There are four resistors. R1 and R2 are unspecified resistors with a resistance of 500 Ohms each. R3 and R4 are Stackpole Electronics resistors with a resistance of 50K Ohms each.
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LEDs (LED1, LED2): Two LEDs are in the circuit, each from Kingbright. LED1 is specified to have a forward voltage of 2V, whereas LED2 has unspecified parameters.
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Current Transformers (U1, U2): Both are ZMPT101B current transformers for measuring AC current. They can play a role in sensing input to make the remote universal, based on the varying current of the devices controlled.
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Operational Amplifier (U3): LM358DR, a Texas Instruments dual operational amplifier, could either be acting as a voltage comparator or signal amplifier. In this case, it seems more likely it's being used as a voltage comparator as they are often used to interface real-world signals like from current transformers to logic levels.
Based on the net connections, it seems the circuit uses a combination of, likely voltage, measurements and comparators to control the two LEDs. Please let me know if there are specific parts of your project you want me to focus on, or if my assumptions are incorrect.
2y
6
ANALYSE THE CIRCUIT, WHERE DO THE OUTPUT FOR LED'S GO AND ANALYSE ALLUN CONNECT...
2y
Something went wrong, sorry. Please try again.
2y
analyse all uncennected connections and if there should be connected else where
2y
Understood, let's proceed with analyzing the circuit diagram provided. Below are the unconnected pins and my recommendations based on typical usage of those components.
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U3: LM358DR: This is an operational amplifier.
- Pin 2 (-IN 1): This is typically the negative input for one amplifier in the chip. It's unconnected.
- Pin 3 (+IN 1): This is typically the positive input for one amplifier in the chip. It's currently connected to U1, but no further connections are mentioned.
- Pin 4 (V-): This is typically the negative power supply pin and should be connected to the ground or the lowest voltage in the circuit.
- Pin 6 (-IN 2): This is typically the negative input for the second amplifier in the chip. It's unconnected.
- Pin 7 (OUT 2): This is the output of the second amplifier in the chip and it's connected to a resistor, R2, but where that output signal goes after that is not specified.
- Pin 8 (V+): This is typically the positive power supply pin and should be connected to the highest voltage in the circuit.
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LED2: WP710A10SGD:
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Pin 1 (K): The cathode of the LED, usually connected to the ground, it's currently unconnected.
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Pin 2 (A): The anode of the LED, usually connected to the driving circuit, in this case R1.
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U1: ZMPT101B:
- Pins 1, 2, 3, and 4 are labeled "~". Without specifics for the part, it's unclear what these pins are for and, how they should be connected. These pins are all connected to the same net.
You should confirm the connections for the unspecified pins based on your circuit's specific requirements and the datasheets for these components. As for the LEDs, they appear to be connected properly as long as the unspecified connections of U3 (the operational amplifier chip) are handled properly. Each LED is connected to an output of the chip, after a resistor.
Physically, the outputs of the LEDs would typically go to the light-emitting portion of the LED component. Electrically, the outputs represent the voltages and currents flowing through the LED and would be connected to other electrical components for powering or signaling purposes.
Remember, the connectivity advice should be checked for your specific circuit requirements, I am assuming typical use cases for these components. For the most accurate advice, refer to the component datasheets and check them against your application needs.
2y
4
U1
U3
Not Recommended for New Designs
R3
Resistance
50KΩ
V1
Reviews
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 #CommonPartsLibraryjharwinbarrozo16.2k- 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 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
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliantjharwinbarrozo1.2M
- 10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlinkjharwinbarrozo700.5k
Estimated Copper Universal Remote
Welcome to your new project. Imagine what you can build here.
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Digi-Key | $0.86–$1.76 |
LCSC | $2.77 |
Mouser | $1.17–$1.32 |
Controls
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