Thanks for all your replies. After having a look at the application an driveline, I discovered that the torque flange solution was the only one (limited space), and found that there are a couple of good inductive contactless systems around
Dave
Hello,
I am specifying a sensor for measuring torque on an electric motor system, and have come across both static (reaction) sensors and rotational sensors which spin with the shaft.
What would be the relative advantages of choosing one type of sensor over another ?
My application has max...
After a bit more playing about with this, I managed to get it working by replacing the LM2904 opamp with an analog devices part OP213, which is a bit of a sledgehammer to crack a nut, but other opamps did not make it stable.
--dave
I wasn't able to include a schematic with my first post as well, so it is attached to this one
Regards
Davehttp://files.engineering.com/getfile.aspx?folder=c496ffdc-2933-41ca-b8b3-bb4bcfb004fc&file=DCconv-Is.jpg
Hi,
I am using a UC2842 PWM chip to control a boost converter, boosting to 120Vdc with a 70Vdc input. The issue is that the Isense input to the PWM chip (no slope compensation fitted) seems to lag the current through the Inductor and sense resistor (0.01R fitted in -ve line)- the two opamp...
Hi,
I am looking for a linear regulator with up to 15V input able to deliver 3A of current with remote sense functionality. Sounds easy, but I need remote sense in both positive and negative lines in a similar way to the way Vicor do on their Maxi and Mini modules.
Any ideas, as the normal...
Hi all,
First off, if this is in the wrong place, then please let me know.
I am very new to PIC programming, but I do know a little about writing embedded software in C and assembler. I have been asked to design an interface to send status information over an RS485 link for a power supply...
Hi,
A petition has been set up on the 10 Downing Street website to protect the status of Engineer in the UK. Today, car mechanics, plumbers and electricians are know known as “engineers” which is seriously eroding the status of our profession.
If you are a UK professional engineer, then...
Thanks for all the useful info chaps - I think that I will make an LC filter followed by a crowbar circuit for 30V and 3A current using SCR and zener diode with a transil diode (SMAJ30) in parallel with a resettable 3A fuse. A couple of questions still:
Would a 20Hz LP filter be sufficient on...
>You don't say what sort of current your equipment normally >needs,
Normal operating current is average 500mA. The problem we have is people deliberately over-volting the unit by connecting supplies to it. I don't know what these are, since it could be anything to hand (if this was 24V...
Hi,
I have a requirement to make a protection unit to prevent damage to our telematics system from large voltage and current spikes, both from the vehicle and attempted sabotage by operators.
The normal operating voltage is 24V, but it is possible to have up to 80V or more spikes. My current...
Commercial vehicle fuel tanks are a big problem since they are many different sizes and shapes.
Are you able to gain access to the inside of the tank? If so you could use any number of commercially made sensors. If you cannot its a bit more tricky.
On a plastic tank, you could use radar...
Thank you all for your responses - fortunately I have mainly standard SMT devices in my design and for the ones which are not I will just have to continue designing in my CAD package. At least once they are stored, I won't have to draw them again !
Dave
Hi,
I am doing some PCB design, and I have found that the information on the dimensions of various SMT footprints is quite lacking on the Web. Is there a source somewhere of footprint drawings with dimensions of the pads + spacings, so that I can design them in my CAD package?
Thanks
Dave
