12 to 30v 6A boost converter

258

04:11:32

Just a small circuit before sleep, fixed some stuffs, lowerwed the output

published 9 years ago

Lucan01

9 years ago

What op amp will be? Cant be 7812 (1amp output)

BillyT

9 years ago

Nice circuit, some serious currents running about the circuit, and about 60 + % in efficiency, took a while to realize that half the circuit wasn't being used at this point in time. So here is the bit of the circuit in use. (When the time base is adjusted for a 1second rate, the circuit doesn't work too well, I'd like to know if this circuit would work in the wild) http://everycircuit.com/circuit/6097833717661696

headshoter

9 years ago

1st answer: the opamp is used as a buffer (delivers the same voltage as the input but higher current) in this case that extra current is needed to drive properly the zener and the not gate. 2nd answer: The extra components are just to protect the load at the output from an overvoltage, yes it can work without those extra components but It was just an attempt to improve a protection to it.

BillyT

9 years ago

I don't understand, where is the not gate, I couldn't get the relay to switch, and how does hooking a resistor to the light bulb work? http://everycircuit.com/circuit/6015378667077632

headshoter

9 years ago

The not gate is the transistor attached to the 100 ohm and the 700 ohm resistor, its used to turn off the reset pin of the 555, the relay works when the zener diode let a current pass into it (overvoltage). You can turn it on by increasing the input voltage, wich at the end makes the output go higher and turn the zener -> relay + not gate... The resistor attached to the lightbulb was a mistake, it should be attached to the output, but it have no point on the circuit anyways.

headshoter

9 years ago

Don't take this circuit so serious, it was made just to help me to sleep. It have enormous errors and i don't use this app to simulate very accurate circuits thinking of efficiency and blah blah blah. i prefer the best simulator (the real life) to do such things, i use ec only to create principles of operation.

BillyT

9 years ago

I'm not really taking your project too seriously, but it is from ideas that people like you post that give a whole lot of new outlook on how to join bits of circuit together to make effective and efficient circuits, thus the questions.

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