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If you look at the pin out description, Vcc is 3.3V. I'm not sure why it's stated earlier in the datasheet that input voltage is 3.3/5. But to be safe, I just used 3.3V.
Yes, of course I've looked at the datasheet. But I believe the current consumption stated there is only for the MAX3232 IC...
Hello!
I'm having a little trouble here. So I used a TL431 for powering a MAX3232 circuit and a GPS module which are both rated at 3.3V. Here's the link for the GPS module datasheet:
https://www.rfsolutions.co.uk/acatalog/DS-GPS610F-2.pdf
This is the schematic:
I used 15 ohms so I can draw...
That's what I think, too. Looking at the datasheets, the 1N4001 has a reverse recovery time of 30us, while the 2N7000 has turn off time of 10ns (well it depends on the conditions... but what the hey).
Should I change the diode as IanP mentioned?...
Hello again!
This is very elementary but I need more insights since I'm not a power electronics guy...
The problem is, I have this circuit here:
Just the encircled part, don't mind the rest...
The mosfet (2N7000) keeps breaking. The relay (NY24WK) coil is rated 24V, at 120mW... So that's...
Hehe sorry for the lack of details. The output of the regulator should be 24V/5A and 5V/2A. And also, I should be able to use the circuit even while charging. Meaning if I plug in the circuit, I would still be able to use the 24V and 5V outputs and the battery should be charging. If the circuit...
Hello!
I need to design a charger + regulator circuit. I have a Li-Ion battery at 33.6V max/29.6V nominal, and the whole circuit should be able to output 24V and 5V.
I don't need a complete schematic or anything, just ideas that could point me in the right direction. And just so you know, my...
So I'm about to use the MAX3232 for a 3.3V TTL-to-serial interface.
I would like a clarification on its operation: Does the Vcc have to be 3.3V for the MAX3232 TTLout (or Tout) to become 3.3V as well? Or does it automatically convert serial to 3.3V TTL if the signal from the other device is...
I'm not sure if this is the right place to post this.. but anyway...
I was tasked to power a ThingMagic M6E reader module through USB ports from a laptop. The reader is configured to draw a maximum of about 800mA at 5V, so I figured all I had to do was connect it to 2 USB ports: 1 port for...
Hello! I have a simple question...
Is it ok to use an SLA battery while it's charging?... For example, I'll be powering a device rated at 9V, 0.85A with a 12V, 7Ah SLA battery. I'll be using an LM7809 regulator in between.
Is it possible?... Do you have any recommendations?...
Ok, so I need to power a 16V max Buzzer [datasheet: https://www.mouser.com/ds/2/252/MSR516NPR-24363.pdf]
Now, I have to work with a 24 V source. I know I could use a divider, but I think the resistors I would be needing have to be either a lot of small ones (1/4W) or a few BIG (>1W) ones. What...
Ok, so it says in the Datasheet that an Omron G5LE Relay has a minimum permissible load of 100mA at 5V. Soooo...what if I use 5V, but a current draw of less than 10mA for example (like a 5V/2.5mA buzzer load or something)? What happens then?
Please don't ask why. I just want to know what...
Wow, thanks for the replies!!!
I think I'm going to go with the LM2596. I can't buy premade boards because the regulator has to be part of a bigger board.
Now a follow up question. I don't think I'll be going beyond 2A. So, if the LM2596-5.0 has 80% efficiency, and I'll be drawing 2A max, will...
Hello!
I'm at my wit's end trying to find a good solution for a simple problem... I need a regulator that accepts about 12 - 24V input and outputs 5V, and at least 2A of current.
I know I can get a linear regulator, but I have size constraints. The heatsink I'd need just won't fit. I'm...
Hello!!!
Another newbie question here...
I haven't used bicolor LEDs before, so I've read some, and found out there were basically two kinds: the 2- and 3-legged kinds. I understand that in order for the 3rd color to come out (the combination of the original two), you have to drive the...
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