Important circuits to learn

[VTI_16V]

Hello. My hobby is electronics repairs, and when i watch other people repairing electronics on youtube i can see that they can a lot of time read from components and their connections excatly what is the purpose of that part in pcb. I am mostly repairing marine electronics, but to be honest I repair it most of the time by comparing values with the same device that is working fine because i have a little warehouse and a lot of devices there. But without schematics and device which is OK i am almoust searching in dark. So can you please reccomend me some circuits that are important to learn and I don't mean how basic component works, I am more or less farmilliar with that, my point is let's say comparators, charge pump, small smps with IC's that are mostly used in consumers electronics, bootstrap circuit, comparators circuits for detecting for example high current consume, H-bridges, current limiters, current mirror circuit, etc.... You can write down everything from your head what comes to your mind, i would be thankfull and I really want to invest my time in learning that

 

[schmitt trigger]

This will be a long list; I'll add just a few and allow other forum members to include from their batch.

-Learn how a linear regulated power supply works, both fixed and adjustable.
-Learn the most common switchmode topologies: buck, boost and flyback.
-Learn the essential opamp amplifier configurations, inverting, non-inverting and differential. Know how to bias them either from a single or dual supply.
-Also, learn the difference between an opamp and a proper comparator.
-Very elementary but a surprising amount of people don't know how to do it: learn to calculate a voltage divider.
-Lastly learn about time constants; resistor-capacitor and resistor-inductor.

As I said earlier, this will be a long list.

 

[KlausST]

Hi,

I absolutely agree with schmitt trigger.

I don't want to tell "what", but "how".

When you see a circuit, and find an IC you are interested in, then look for the manufacturer, visit the internet site, look through the datasheet, look through application notes.
These are the most important and most reliable documents. Many circuits are designed upon these informations.
Then maybe you don't need a working circuit to compare with...
And you really understand how the circuits work..and why

Klaus

 

[shredder929]

I would highly recommend this website: http://www.ecircuitcenter.com/Circuits.htm

It covers a lot of good op-amp and power topologies, as well as practical audio circuits. Working in marine electronics, I imagine there's a lot of sensors and sonar, that site will come in handy.