Using LM358 IC for Dual VU-Dial Indicator System in Plastic Housing: Tips & Tricks
Hello.
Recently, I got my hands on two dial indicators. I used two such systems to drive these indicators
based on the LM358 integrated circuit. I made the pcb project in TraxMaker. The whole thing is placed in a plastic housing.
Film_presentation:
Recently, I got my hands on two dial indicators. I used two such systems to drive these indicators
based on the LM358 integrated circuit. I made the pcb project in TraxMaker. The whole thing is placed in a plastic housing.
Film_presentation:
elektronik.b wrote 360 posts with
rating 80 .
Live in city Lipce Reymontowskie.
Been with us since 2014 year.
Comments
Housing not too nice - good for some workshop power supply, not for an audio set element; the wires inside are routed sloppy, but the biggest error is the visible diodes illuminating the scales of the... [Read more]
There are numbers on the scale of the indicators, what do they mean? And how does the electronic circuit convert the input signal into a signal that drives the indicators of the appropriate value? [Read more]
Hello, Interesting project, today the displacement indicators are a rarity. The fact that you could use a better casing and a little more order inside, but you have to start somewhere. The next version... [Read more]
Overall a plus for wanting to :) As for the performance, there are a few mistakes, first, as already written, the LEDs are terribly tiring at the front, they should be covered from the front. If you have... [Read more]
Because that's where the logarithmic amplifier should work ... https://obrazki.elektroda.pl/2526971600_1617560531_bigthumb.jpg https://obrazki.elektroda.pl/4712490200_1617560592_bigthumb.... [Read more]
It is correct. In the diagram from the title project, the opamp is in a non-inverting configuration and the D1 diode causes that for small signals the amp works as a comparator, and for larger signals... [Read more]
They should not be on the front of the indicator at all. The indicator housing is specially adapted to be illuminated from the back - in the original, it is an all-glass bulb without a socket. This is... [Read more]
You had to make full use of one LM358 chip instead of two, only half of each. How can amplifiers be wasted like this? :D Everything would then fit nicely on one PCB. If any amps are already left unused,... [Read more]
I wrote above. About that as well. And this too ... [Read more]
@ 398216 Deleted There is a quarter of an hour difference in time between our posts. It already happens that two users will write something similar at the same time, and it will only come out after sending.... [Read more]
19 minutes is quite a lot. Even I - having some writing difficulties - don't post that much. As for 1/3 ... the fact that only 1/3 coincides is a relative value. If you actually read my post beforehand,... [Read more]
From prefabs, you can buy a nice module to control the indicators, and if you want to, you can find its diagram on the internet. Personally, I use it in my power amplifier to indicate the output power... [Read more]
Speaking of OT: on several forums, I saw a warning when posting a message if someone added a post to a thread in the meantime. And whether 19 minutes to write is a little or a lot - a relative thing.... [Read more]
Such an indicator does nothing. It works 0-1. Let this maximum scale be practically unattainable. If you heal it a little, it will be cool. [Read more]
I had such a problem with the LED backlight for the bulb, I used a piece of silver; a half cylinder placed on the diode and a flat piece at an angle of 45 degrees from the face where the most light. [Read more]
Welcome back. Thanks for such comprehensive answers. 1. As for the leds illuminating the scale (why didn't I hide them?), I just wanted to use them as a bedside lamp, because I often listen to music... [Read more]
I recommend https://www.modushop.pl/uklad-sterowania-wkieta-analogowymi-hq-zmontowany-vu02mou.html, its diagram can be found in its author's post on the audiostereo forum. After calibration, your gauges... [Read more]
It is enough to add a PCB with diodes to what is already done to improve the operation of the system. https://www.elektroda.pl/rtvforum/topic3580678.html [Read more]
I do not really understand which LEDs you mean, can you point them to the green one? [Read more]