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ADE7878 deals with 3 phase voltages and currents. Currents are isolated because of using CTs (Current transformer) But isolating 3 phase voltages is expensive, so I have used a simple resistor divider
I want to use isolation because one side is 3 phase voltages in the system and in other...
Hi
I have a microcontroller and 2 devices that supports I2C (ADE7878 (energy metering IC) and EEPROM)
I want to connect SDA and SCL in these 2 devices to my Micro with optocouplers for more protection
I think SCL is output for Micro and input for EEPROM and ADE7878 so I may connect SCL of...
Hi
I'd like to design an adjustable counter without using a micro-controller
For example this system should be adjustable to count up to 100, and switch a relay when counter matched the adjusted value (100 in this example)
The top value for counter should be adjustable with a few micro-switches...
Hi
Please visit my circuit for RS485 serial connection
I've used 2 max485, one for receiving and the other for transmitting data
I know we can implement it using 1 max485, we I am going to concentrate on using 2 in this topic
In my program, I disable receive when I start transmit to avoid...
Thanks
1. Could you please explain more? How should I decide about the resistor values for 2 existing converters?
2. What if I want to construct parallel-able converters, how can I design it to work for all conditions?
I prefer not to waste too much power
maybe I should measure the current...
Hi
Assume I have 2 Switching mode power supplies
For example 2 flyback 400V/12V converters with 5A nominal output current. These power supplies do not have current limit protections
My load (12V) requires a 10A power supply
What happens if I parallel my two SMPSes?
What should I take care...
Hi
In my experience, max232 gets damaged frequently. It works, but after a few days it may get damaged
I have tried using original products, but it hasn't helped yet
This is the schematic we usually use:
What is your experience?
Any suggestions?
Hi
I have 8 analog channels in atmega128 to read. I want to read these values and send them to master when requested (using RS485 4-wire and MODBUS protocol) part of my circuit is attached
I think I have to wait for a call from master in my code (I am going to use codevisionAVR); so I'd like...
Thanks to all!
I tried to use your last suggestion for biasing the circuit and simulated it in SPice, but again the positive input is not the same as negative input
Here it is:
Where I am wrong?
Thanks again for your help
I only have one +24V supply
can I split it by 2 capacitors like below:
will the circuit work then?
Is there any other cheap solution?
Thanks again for your comments
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