Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Hi.
I've bought my first LCR meter, capable of testing at 100 Hz to 100 kHz.
It can measure ESR in Cs mode (capacitance, series measurement).
For electrolytics, it seems to work fine.
But, if test a good 100 nF ceramic capacitor, it measures hundreds of ohms resistance, which it obviously must...
Hello, I can't find anything about what capacitor to supply to a circuit. And why to supply it to a circuit. If I e.g have a circuit with a battery and a led, the battey is 3.2v, and the led's forward voltage is 2v, and the current limit is 20mA to the led.
Oh, and what happens when a capacitor...
Hi ladies and gentlemen,
I was wondering if any of you could help me with a repair on an electronic bathroom scale. The brand is Homedics and the model number is SC-476. It is no longer under warranty, so that's not an option, unfortunately.
I tripped and fell walking into the bathroom, right...
It should be easy. It is about a 12V DC source and two triplets resistance-capacitor-resistance in parallel. The theory and spice predict that in the long run ( many times more than 10*R*C), the two capacitors will charge at 12V, but in practice, only one does! C = 0.33uF for each triplet, each...
**broken link removed**
What's the use of 5th diode in this schematic..(which is in parallel with cap)?
This is a circuit to drive led from mains AC.
Sorry if this question is too simple or obvious.. I just want to know what that diode's doing there.
I'm truly very clueless about electrical circuits and I'm hoping to get some help. I'm told I have some AC ripple in my DC power lines, so here I am looking for some help. Here is a brief summary of what I have.
I'm using the following part to get a 24V DC output...
I probably need to replace a 16KV, 470pF doorknob type capacitor. They are very expensive, so I was thinking of putting 2x 10KV, 1nF ceramic disk type caps in series, which is much cheaper. Then my brain eventually ground round to the idea of hollowing out the original cap and putting the disk...
Hi, I am currently working on a passive rectifier circuit for an implantable device. I was wondering if anyone could tell me the equivalent impedence/resistance before the diodes in the circuit i.e. nodes x, y in the attached image. Is there an expression that can be stated for all rectifiers...
Hey guys,
This is my first post and I am happy to have found this website. I am currently working on a project using a PCB and jumper wires to make a 48v Phantom Power supply to be used with multiple condenser microphones. To make a long story short, I found a "mostly" detailed post on another...
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