Comments on: How to make an Inverter- Simple 40 Watt Inverter

By: vikram

vikram — Thu, 19 Jan 2012 17:37:59 +0000

And also please mention the Ah rating of the battery for long backup for an 10w cfl load…..

By: vikram

vikram — Thu, 19 Jan 2012 17:20:58 +0000

what type of battery do i need to use in this ckt for better power output(40W)?

By: Omega9850

Omega9850 — Tue, 15 Nov 2011 22:05:02 +0000

Just a little heads up… This circuit is good, but may cause some confusion.

The ZENER DIODE that is rated 10 VOLTS and .5 VOLTS is actually a 10 VOLT 5 WATT Zener Diode.

All RESISTORS should be 1/2 Watt 5-10% Tolerance.

All CAPACITORS should be Ceramic and 20+ Volts.

All TRANSISTORS should have HEATSINKS!

The Amp rating of the BATTERY, FUSE, and TRANSFORMER must match up! (A regulator can be used to regulate the battery power).

By following the schematics and these instructions, you should be able to build a good Inverter. Remember, 120 Volts is a lot, and at 40 Watts is well beyond lethal. Electrolytic Capacitors will be OK, but Ceramics are recommended as they have a longer lifespan.

By: seetharaman

seetharaman — Thu, 14 Jul 2011 17:39:15 +0000

Miloman send your enq. to seethasub@hotmail.com i will send you the detailed circuit.

By: miloman

miloman — Thu, 14 Jul 2011 01:07:37 +0000

Hallo, this be very good circuit, can you please tell me, I have many many wall wart transformers and my old power supply transformers, but not one center tap in thee whole mess. Short of stripping a core and re-winding, I read somewhere way back when, that two Identical transformers can be joined in such a way as to produce a centerTap, but that the polarity “-, +” on each trans should be Identified, and then hooked up,,,WHICH way? I cannot remember? Thanks so muchous for this circue,

By: mathew

mathew — Tue, 07 Jun 2011 22:34:14 +0000

hi i had gone throug your site and itwas excellent,i saw how to make an inerter,please can u send circuit diagram to convert 20volts into watta. please help me ok, from nigeria

By: Kiran

Kiran — Tue, 17 May 2011 13:54:10 +0000

hi
i had gone through your site and it was excellent. i saw how to make an inverter . can u please send a circuit diagram to convert 6 volts into 40 watts. Please send it as soon as possible.

thnkyou
frm kiran.
bangalore.

By: Rithwik

Rithwik — Fri, 28 Jan 2011 17:37:40 +0000

Donot use a 9-0-9 transformer,the output voltage will be very high.use 12-0-12.You can believe me because i made this.it is working in good condition.use a medium sized heat sink for transistor.I lost one transistor because its sink was loose.its very cheap except for the 5A transformer.

By: Negin

Negin — Sat, 08 Jan 2011 00:00:51 +0000

replace R and C

By: Negin

Negin — Fri, 07 Jan 2011 23:57:33 +0000

The formula for calculating the frequency is: f=1/(4.4RC)
R: between pins 1 and 3
C: between pins 2 and 3