How this circuit functioning?
This is Inverter 100W by IC 4047 + 2N3055.
This is Inverter 100W by IC 4047 + 2N3055.
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I'm asking this question out of ignorance, not out of disagreement.That circuit will not work as shown.
Buy an inverter that matches your needs.
Issues:
Is your transformer rated for 2.5-4 kVA?
- Output is Square Wave, a big efficiency loss in transformer
- Frequency not controlled
- VCE drop of transistors causes a lot of heat and even less efficiency.
- 12V - 220V is a 20x increase in voltage, and a 1/20th loss in current
- After subtracting the roughly 50% losses, Getting 5W from 220V side would be astounding.
If those are the only components you have access to, feel free to try, but don't expect much, and have a lot of fuses on hand.
The frequency will drift with temp when using an RC time. It's not like most small things today even care, though.I'm asking this question out of ignorance, not out of disagreement.
Don't the pot (VR1) and cap (CX) control the frequency of the chip?
Or are you thinking about a "higher level" frequency control?
Thanks
Gotcha!The frequency will drift with temp when using an RC time. It's not like most small things today even care, though.
Yeah that's a schematic fault (along with the others). The 2N3055's are supposed to be in paralleled pairs, similar to a lot of other simple inverter designs....
The way that the transitors Q3 to Q6 are connected is very odd.
The transistors are not correctly connected to work in parallel.
The base connections of Q3 and Q4 are at the same level.
Also the base connections of Q5 and Q6 are at the same level.
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