How to ... transform DC to AC?

[Rafael Ti]

Well, ... which one would you prefer for switching duty in your circuits:

Although some reed switches can operate up to 500 Hz I would suggest you to use the hall effect sensor. Just because of frequency. I think 500 Hz is to high for mechanic switches especially when they work continuously... Also using some types of hall effect sensors you can determinate the N & S pole of magnetic field and its sensitivity, which is impossible for reed switches.

[tabeta_03]

@TiLeeTY,

The attached 556 oscillator gives you control of both frequency and duty cycle.

GL.

Hello dear Groundloop and all ou members
I have a mini incubator at home that is working whit 12 volt AC - 1.5 amp and 10 watt this incubator has Thermoregulator borde&heater&Fan&Gear .i am trying to turned it on with 12v DC -5amp dry-cell battery but i need a 12v DC to 12v AC inverter and I made your attached 556 oscillator but that output is not AC i should connect pulse out to what for 12 volt and 1.5 amp ac output? I am not an electrical engineer i only connected the Parts form your map.pleas complete this attachment to 12vAC output for me.i love u and internet that i can connected to u whit it.

[tabeta_03]

@TiLeeTY,

The attached 556 oscillator gives you control of both frequency and duty cycle.

GL.

Hello dear Groundloop and all ou members
I have a mini incubator at home that is working whit 12 volt AC - 1.5 amp and 10 watt this incubator has Thermoregulator borde&heater&Fan&Gear .i am trying to turned it on with 12v DC -5amp dry-cell battery but i need a 12v DC to 12v AC inverter and I made your attached 556 oscillator but that output is not AC i should connect pulse out to what for 12 volt and 1.5 amp ac output? I am not an electrical engineer i only connected the Parts form your map.pleas complete this attachment to 12vAC output for me.i love u and internet that i can connected to u whit it.

[Groundloop]

Hello dear Groundloop and all ou members
I have a mini incubator at home that is working whit 12 volt AC - 1.5 amp and 10 watt this incubator has Thermoregulator borde&heater&Fan&Gear .i am trying to turned it on with 12v DC -5amp dry-cell battery but i need a 12v DC to 12v AC inverter and I made your attached 556 oscillator but that output is not AC i should connect pulse out to what for 12 volt and 1.5 amp ac output? I am not an electrical engineer i only connected the Parts form your map.pleas complete this attachment to 12vAC output for me.i love u and internet that i can connected to u whit it.

tabeta_03,

The output from the 556 oscillator is not AC, you are 100% correct. You need to build the H-Bridge circuit also
and use the 556 oscillator as a input to the H-Bridge. The output of the H-Bridge will be 1/2 of the frequency
of the 556 oscillator. So your goal is to tune the 556 oscillator to 100Hz (or 120Hz) to get 50Hz (or 60Hz)
output from the H-Bridge. The output of the H-Bridge will be pulsed DC.

GL.

[forest]

I heard that it's possible to get very nice clean 50Hz AC pure sinewave using 4 mosfets bridge with a microcontroller setup. Is that true ?