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Hello All,
I have used AT89S52 in one of my project. As i have programmed AT89S52 on evaluation board it is working fine, But when i am using that same programmed ic on board then it is not working.
I have attached schematic of my board...
Please solve this.
Hello Everyone,
I have selected Quectel L80 GPS Module for my project. It gives 1HZ 1PPS out signal.
Now i want to choose MCU for that application. In that i want 1 UART , 5 GPIOs .
My question is how can i take care of 1HZ speed can be decoded by MCU ?
Please suggest me any chipper MCU for that.
Hi biff44,
Thanks for your response. Can you please suggest any reference schematic or Block diagram that explain how this works ?
And yes after surfing i got that idea that i have to use RF amplifier.
As you said " RF signal is coupled to the laser diode thru a DC blocking capacitor " , But i...
Hello All.
Can anyone suggest me for any reference design for RF over fiber optics.
I am familiar to Ethernet to Fiber converter and i have designed it, But This one is totally new for me.
Frequency range : 100kHz- 1GHz
Power Level : -80dbm
Thanks in advance.
Hello All,
I need a help for my upcoming project that is GPS CLOCK. I want basic selection guide for choosing GPS module for CLOCK. As i surf i got basic selection idea for GPS position detection. Is there anything different for GPS CLOCK ???
Hi,
I am using AFBR-5803ATZ Ethernet data to fiber connection. In application note of AFBR-5803ATZ they are suggesting that i have to use Ethernet Phy which will support fiber section ( Micrel KSZ8041FTL ).
Now,
1) my question is can i use simple conductor Ethernet Phy for interfacing of fiber...
Hello,
I have to choose surge and ESD protector for my device. It falls in class 4 that is 8KV contact/ 15KV air for surge protection and class 4 for 4KV protection in Surge.
Circuit Detail :
1) input signal is 110V DC for monitoring
As it is coming through field i have to put ESD/Surge...
Dear FVM,
Specification is given below.
AC Current Input : 0-2A, 50Hz
So it may be directly current source from another sensor.
I have to sense 0-2A signal on my board which is coming from field and for that i am using CT 1248 current transformer.
So from your answer i can conclude that as my...
Hello,
Finally i got practical readings same as theoretical and clear about all quires which are listed above.
One last thing i have to ask,As i have shown in attached test setup in my first post ,
Is series resistor in primary side is really required ?
If yes , then Why ?
And how can i...
Hello,
Thanks so much to all.
1) I have one question regarding Saturation Voltage Vmax for CT1248-A1-RC. As there is no information given in datasheet.
2) One more thing i have to clarify is that i will use that CT for measuring 0-2 A (A.C.) only, because i want high isolation from primary to...
I have a Current Transformer for 10Arms rating with 1:1500 turns ratio. I'm not familiar with it. In Current transformers the specifications will be in primary current to secondary current ratio, but here the ratio is in terms of primary & secondary turns ratio.
1. How to calculate the current...
Dear PRIYADHARSHINI,
First of all AFBR-5803ATZ is not only fiber optic connector but it is itself Ethernet Transceivers. if you are using that then there is no need of AL210. you can directly convert your Ethernet data into fiber mode using AFBR-5803ATZ.
Hello All,
As i have used 4Gb DDR3 SDRAM (H5TQ4G63AFR-PBC-448A) in one of my product and while calculating MTBF of that board based on MIL-HDBK-217F-Notice2 i found some issue.
In MIL-HDBK-217F-Notice2 document " Die Complexity Failure Rate - C1 " factor is given only for up to 1M but there is...
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