A previous article(An oscillator of the 200 watts power inverter) I say about the frequency generator circuit of the our 200 watts home inverter. The next we see part of output as well.
As show figure below When IC2-SG3526 can generate the square wave frequency of 50Hz output at pin 13 and pin 16. Both signal that has Phase difference is 180 degrees will send to R13 and R15, to bias pin gate of both transistors Q1 and Q2 number IRFP054. Which are mosfet type N channel, that has diode damper Diode is within, makes both of transistors alternately conduct current. If any one has a bias. signal at gate pin as high will can conduct current(ON). But if it get signal as low will stop conduct current(OFF).
The conduct currents of the two transistors. Cause current to flow in primary coil of transformer T1 into drain out to the source pin of Q1 and Q2, and to fully circuit at ground by pass to R8 value 0.01 ohm. Which is resistor monitoring the amount of current in the output circuit, which is discussed next.
The working of Q1 and Q2 are characterized the switches. The spike voltage will cause the occurs at pin drain of both transistors. Which occurs incunabulum It is changing state from ON to OFF. This spike voltage is the voltage is very high. May be higher than the supply voltage, many times. Which is extremely dangerous to the power output transistors. Therefore, it is necessary to eliminate this spike voltage out. The circuit that performs this function is called a snubber circuit.
The snubber of this circuit consists of D4, D5(BY299), D6, R14, C9 and C10. For D5 and D6 are diode works faster or called Fast Revovery Diode number BY299.
Under normal conditions, D5 and D6 will do not conduct current. Which it will conduct current when voltage at pin drain of Q1 or Q2 rise. Until have value greater power supply (+12 volts), The current will flowing through the both diode into charge to C9 and C10, and if voltage at pin drain of Q1(IRFP054) and Q2(IRFP054) have higher 18 volts, will makes the zener diode D4. Which have value 18 volts conduct current through the R14 of 18 ohm.
Which operation of all the equipment as a result to lower the spike voltage.
Likely that both power transistors will be damaged less.
Note:
This article is part of 200 watts home power inverter project using SG3526N You can read each section for continuity.
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ARAL TECH
6 Jun 2013hi tank for this post
what is the part number of IC1?
admin
9 Jun 2013Hi,ARAL TECH
I thank you for your comment, and I am very glad you are interested in my posts.
The IC1 is LM393.
Iran
14 Jun 2013hi,tank for website
what is the part number of t1?
admin
14 Jun 2013Hi, Iran
Thanks you comment.
T1 is 220V to 12v ov 12v at 200watt or 200VA.
https://www.eleccircuit.com/how-to-build-the-200-watts-home-inverter-projects/
mohanraj soni
15 Jul 2013Very nice to make familiar with DC-AC Invertor, but request in interest hobbyiest if you mention the Capacitor/Voltage, Resistors used with of wattage safe to use/he be safe. Heat-sink also may be shown/append as, where and when used in circuite Thank you for the cause of common men interested to enter in this field/hobbyiest
elabbas
16 Aug 2013hi, please how those IC1B activates the reset pin 5 of IC2 considering that the signal diode 1N4148 is reversed biased?
gokul
2 Nov 2013you are using step down trans former only using step up tranformer
AMOS
21 Nov 2013hi admin,
Thanks for this post
What is the value of Resistor between c2 ,c3 and pin6 in IC1 B
bankole michael fem
17 Dec 2013What is the part number of IC1A and IC1B
Dina
22 Dec 2013what is the value of the resistance between IC1A, IC1B ??????
Dina
22 Dec 2013what is the value of the resistance between IC1A ,IC1B?????
dina
23 Dec 2013what is the value of R7 ?? the resistance between IC1A , IC1B??
Raj
29 Dec 2013between ici 1 and ici 2 their is resistor and it’s valuve not given.D1 condencer valuve also not given please let me know. please describe alternate ic for the SG3526
sharath
21 Jan 2014can I know what is the current at the output stage of the inverter we get.
Innoson
24 Jan 2014Hi, thanks for this post.What is the part no. for the resistor between pin 18 of the IC2 and pin 2 of the IC1A or pin 6 of IC1B
tarun
24 Apr 2014can u give me a list of components of that circuit
PATRICK
2 May 2014hi,
please I want the resistor value that is between IC1A and IC1B,
I will be expecting your positive response
best regards
richard
30 Jun 2014Sir
Very powerful project,but sir it possible to make changes around the sg3526 to obtain a puresine wave?i want to make a puresine wave inverter.please help sir.tnx
Janardhan Reddy
23 Sep 2014sir
very usefull but some values are missing in the diagram please send methise values like resistance between ic1 and ic2 and condenser values
and please say what is the alternative for ic3
prits
11 Nov 2014Hey, can IRF540 be used in place of the mosfet?
Carl Strand
29 Jan 2015Hello could someone please draw up and explain a schematic for a circuit that will take a 115vac 360 watts max input and result in a 115vac 1500 watts output
Carl Strand
29 Jan 2015or some way to go from 12 or 24vdc to 130vdc THANKS
Olaide Raji
28 Mar 2015pls what is the value of the resistor betwen ic1a and ic1b pin2 and pin6 to ic2 pin1 and pin18
momename
29 Mar 2015Hi Olaide Raji,
Please look for : https://www.eleccircuit.com/how-to-build-the-200-watts-home-inverter-projects/
Olaide Raji
29 Mar 2015Thanks, may God bless you sir.
saeed azar niya
29 Jul 2015hi,thanks for funny your site,if can please put high frequency inverter(dc to ac) schematics.
thanks
SUDIP
19 Oct 2015CAN I USE IRFZ44 TRANSISTOR
wolvox
10 Feb 2016Why R8 0.001 ohm resistor used??
dessky
9 Oct 2016can dis circuit ppower my laptop, tv set, home theatre, fan and bulbs?
gelu
20 Jan 2017helo. good site.this inverter can be used to pump central heating? god with you, sorry for my english
mehedi
21 May 2017What ic1 number