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As per your suggestions I am planning something on these lines.
Which you said should work in theory,
I think this part would work ?
https://www.farnell.com/datasheets/2007680.pdf
Driving through an optocoupler to isolate the logic, I somehow need to figure out how to use the load...
Hello,
I basically have project part of which requires to switch a 100mA load which can be 5 to 230VAC or 5 to 300V DC.
The load is supposed to turn on and off say 10 times a second, like a square wave.
I need to isolate the load from the primary circuit
So SSRs are perfect for the...
I checked the datasheet of the display module (Red)
Forward voltage per segment is typ 2V and max 2.6V
I had a word with the design engineer(I am an intern here) who's design was the reference for this design as his is similar only smaller. He said that BC847 was used in emitter follower...
Hello Klaus,
https://www.edaboard.com/threads/347781/
This thread has the powersupply. Also, one more observation is if the 6V rail voltage is increased as it is linear power supply the amplitud eof the oscillations also increase proportionally.
How do the post the layout? which format?
-...
Okay, so the BC847B are incorrect and are not being saturated but operating in the active region or am I misunderstanding? Why can't NPN be used I am sorry I did not understand that part. Or the BC817 should be changed to PNP transistors?
But now it is clear that the transistor are causing...
Thank you for your comment :)
The circuit may be wrong but it is somehow working. I mean although there is noise which is disturbing the analog signals from the sensor. The display is shows exactly what it should as per software.
Although, as y'all say this circuit is wrong I would want to...
Hello All,
I have a display board which is basically to display messages controlled through a microcontroller.
Total of 12, 7 segment digits common cathode.**broken link removed**
Problem Statement: The board starts ringing when Seg A and CC4 are on. There is noise on the entire board, 6V...
Hi,
Klaus is correct; no need to amplify the single, rather increase the burden across your CT.
Although, if you wish to use an opamp, I suggest place a small capacitor across R8 (100pF should suffice) this will attenuate HF noise.
For Precise Vcc generation; yes I have taken trials with reducing the R2 and R1=0E as per your suggestion which have improved results but they aren't enough.
it is definately the reservior because I just checked the current waveform and concluded that peak current is 300mA this
must be...
Yes, I want to deal with the flat top, how can I correct this , The secondary current is 97mA at 185VAC; 127mA at 230VAC and 138mA at 270VAC.
There is no ripple (20mV) on the (3V3) Vcc after I have about 4.6V at the Vdsp. Earlier the ripple is natural due to voltage drop across the Q1 junction...
Hello,
I have designed a linear power supply using a step down transformer, bridge rectifier and a filter capacitor , there on it goes to a shunt regulator TL431 to generate 3V3.
Ratings: Transformer 6V 230mA at 230V AC Input.
Capacitor: 2200uF/16V
The load is a 16 Digit Seven Segment...
I think the usable test volume corresponds to the volume with an uniform field, The red colour denotes the maximum allowable size of the EUT and the green colour denotes the volume with uniform field, It may be one-third of maximum septum height, though this is just a speculation. I am not very...
Thank you so much,
There is still one problem, How do I decide how much is the usable volume for a given GTEM Cell,
,
Should I just geometrically calculate or is there a formula or a reference somewhere?
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