170v SUPPLY FOR NIXIE TUBES - How to use this circuit to supply Incandescent Bulb?


How to open MOSFET transistor more?

It is NE555 THE ASTABLE (or FREE RUNNING) MULTIVIBRATOR used in this
circuit.
https://drive.google.com/file/d/1z4E-Hyh9ck2qWItH1X43xpZRKHtxjQuB/view?usp=drive_link

I don't have the exact 2n2 valued capacitor.
By calculation from the original diagram the frequency should be:
F = 30.303 kHz

R1 = 1K Fixed
R2 = 10K
C1, 222, 2n2 = 2200 pF
F = 30.303 kHz

I used this values of resistors and capacitor I have:
R1 = 1K Fixed
R2 = 18K
C1, 102K, = 1.000 pF
F = 30.303 kHz

I used this formula for frequency calculation:
frequency = 1.4/((R1 + 2R2) x C)
https://drive.google.com/file/d/1mlZ8Qw2mFXQ1fgaJbM8BiflNYbliF_vf/view?usp=drive_link

And I set the exact frequency at:
F = 30.303 kHz

If I use a smaller inductor The Incandescent Bulb shines weakly.
https://drive.google.com/file/d/1elfc_k5bttXwH3uVDK8gOCsOn8bbfFwE/view?usp=drive_link
Transformer whire width
https://drive.google.com/file/d/1rBEiBCUOaaValxUO8qC7ldYAR2FNrAsu/view?usp=drive_link
I didn't measured the ferrite core dimensions I it is necessary I will
send them to the forum.
I didn't count number of windings I it is necessary I will send it to
the forum.
The Incandescent Bulb light intensity
https://drive.google.com/file/d/1bYZW2hd1Hf5zhdfAt1elBcBwm1FIOLH5/view?usp=drive_link

If I use an inductor that I winded manualy The Incandescent Bulb shines
weakly but more brightly.
https://drive.google.com/file/d/1O-y0z0G8UU3I76Wydo4vHX_ZzPjpFpSs/view?usp=drive_link
https://drive.google.com/file/d/1AIOMn07a6ptJP66nXtHlmxXpWumd6DvT/view?usp=drive_link
Transformer whire width
https://drive.google.com/file/d/1fky25SQLJCLrlLTyIRgWR1ESm_QAY_Hk/view?usp=drive_link
I didn't measured the ferrite core dimensions I it is necessary I will
send them to the forum.
I didn't count number of windings I it is necessary I will send it to
the forum.
The Incandescent Bulb light intensity is a little greater.
https://drive.google.com/file/d/1tXbkMEVEfPEMYe8HIGlPhzrU1En_zJSm/view?usp=drive_link

If I try to connect more windings from the inductor that I winded
manualy the Incandescent Bulb light starts to shine at lower and lower
intensity.

I do not know the exact power of The Incandescent Bulb it should be
about 75W or 85W or 100W. It is not written on the product.

If I try to mesure the voltage for DC output for The Incandescent Bulb,
my Multimeter shows irregular unstable value of over 1000 Volts.
My Multimeter maximum value for DC voltage measurement is until 1000V.
My Multimeter maximum value for AC voltage measurement is until 750V.

I understand that this circuit is for Nixie Tube and
a Nixie Tube is smaller power consumer then this The Incandescent Bulb.

Is it possible to modify this circuit to supply this The Incandescent
Bulb?
https://drive.google.com/file/d/1tXbkMEVEfPEMYe8HIGlPhzrU1En_zJSm/view?usp=drive_link

I think this is a simple form of a Switched-mode power supply like
it is used for PC Computer chase power supply? I am not sure.

This circuit diagram is taken from:
https://drive.google.com/file/d/1GI4AKGPGHgZM-80P_qdI6icKrk-_YFFn/view?usp=drive_link

 

Boosting 12V to 220V is going to be difficult.

For 75W you need over 6A from your 12V supply. Can it supply that?

The inductor will need to handle much more than that. Can it?

You can buy a 12V to 220V inverter at 100W very cheaply. That is your best bet.

 

12V 100W lamps are available !

 

Hi
the proposed circuit is designed to produce few milliamps only. For a small neon lamp, Geiger counter , etc.
Not suitable for heavy loads, as a 70W incandescent lamp.
A circuit built around the centertaped transformer can be used. High frequency or low frequency inverter can be used for incandescent lamps. HF transformer is much lighter than a LF transformer. The example:

https://electronicscheme.net/transistorized-inverter-60w-12v-dc-to-230v-ac/

A more reliable device is shown here. Built on an old good controller '494' :

 

Hi
the proposed circuit is designed to produce few milliamps only. For a small neon lamp, Geiger counter , etc.
Not suitable for heavy loads, as a 70W incandescent lamp.
A circuit built around the centertaped transformer can be used. High frequency or low frequency inverter can be used for incandescent lamps. HF transformer is much lighter than a LF transformer. The example:

https://electronicscheme.net/transistorized-inverter-60w-12v-dc-to-230v-ac/

A more reliable device is shown here. Built on an old good controller '494' :

A more reliable device, but a highly questionable circuit.
The 494 has deadtime, during which neither of its output devices are on. In the circuit above the MOSFETs are on whilst the 494 output transistors are off, so during the "deadtime" BOTH output devices are switched on.

 

A more reliable device, but a highly questionable circuit.
The 494 has deadtime, during which neither of its output devices are on. In the circuit above the MOSFETs are on whilst the 494 output transistors are off, so during the "deadtime" BOTH output devices are switched on.

You was right. A lot of published circuits are for demo only.
Let the author to answer

 

Boosting 12V to 220V is going to be difficult.
For 75W you need over 6A from your 12V supply. Can it supply that?

Blueberry PSB400
Red wire: +5V, 22.0A = 110.00 W
Yellow wire: +12V, 12.0A = 144.00 W

 

Blueberry PSB400
Red wire: +5V, 22.0A = 110.00 W
Yellow wire: +12V, 12.0A = 144.00 W

What is that powered by? If 220V mains, why would you step the voltage down, then up to run a light bulb that could run off mains?

 

You was right. A lot of published circuits are for demo only.
Let the author to answer

It is amazing the amount of incorrect circuits published on the web.
The circuit referenced in the YouTube video has two major flaws that by coincidence cancel each other. The first one is the cross-conduction mentioned above. The second is that the pullup resistors are at least 100X too large, causing the turn on time to be glacially slow compared to the turn off time. Because of this happy mistake, the Mosfets don’t burn up.

 

What is that powered by? If 220V mains, why would you step the voltage down, then up to run a light bulb that could run off mains?

I understand I can use "Light Dimmer Circuit 1000 Watts Using BT139".

 

The inductor will need to handle much more than that. Can it?

No it cannoct if I connect it to greater number of windings the bulb shines less.

 

What is that powered by? If 220V mains, why would you step the voltage down, then up to run a light bulb that could run off mains?

I am doing it just for practice.

then up to run a light bulb that could run off mains?

Simple for practice purpose.
I want to make a simple power supply to step-up voltage for different kind of circuits.
I understand that I must not play with wall outlet line power supply directly, it is very dangerous.
Sometimes I need to make higher voltage than +12V to power my circuits in general.

I connected a
LED A60 9W 810lm E27
6500K 220V-240V 50/60Hz

It shines at full intensity but I understand the LED bulb is a less power consumer then The Incandescent Bulb.

 

I understand that I must not play with wall outlet line power supply directly, it is very dangerous.

The stepped up voltage is also very dangerous.

 

I understand it is.

 

12V 100W lamps are available !

I want to make 12VDC to 220V DC circuit for general purpose.
I would like to assemble circuit from 12V DC to 220V DC rather then to experiment with wall outlet
voltage directly.

Hi

the proposed circuit is designed to produce few milliamps only. For a small neon lamp, Geiger counter , etc.
Not suitable for heavy loads, as a 70W incandescent lamp.
A circuit built around the centertaped transformer can be used. High frequency or low frequency inverter can be used for incandescent lamps. HF transformer is much lighter than a LF transformer. The example:
https://electronicscheme.net/transistorized-inverter-60w-12v-dc-to-230v-ac/
A more reliable device is shown here. Built on an old good controller '494' :

May I use this transformer for the following circuits? It is only 15Watts.
https://drive.google.com/file/d/1B6rWB7ChM8N4RNhXkI7fGoGPDcStleS8/view?usp=drive_link
https://drive.google.com/file/d/1R_LTwGuIHhV4Q7JgSDd-NK_m9AdhgziC/view?usp=drive_link
https://drive.google.com/file/d/1StpaIYfxcZ226JlSsjmQ5D7SsP1b-5fe/view?usp=drive_link

 

No it cannoct if I connect it to greater number of windings the bulb shines less.

The POWER delivered in a correctly designed switching power supply all is delivered by the inductor.So it is the amount of iron that must be large enough to transfer enough energy. Switche supplies are not simple to design, unless you have the application notes for them AND the actual specifications of what is required, both voltage and current.
Withoutknowing the requirements how can we possibly expect to help with a design when the requirements are not given.

 

I want to make 12VDC to 220V DC circuit for general purpose.
I would like to assemble circuit from 12V DC to 220V DC rather then to experiment with wall outlet
voltage directly.



May I use this transformer for the following circuits? It is only 15Watts.
https://drive.google.com/file/d/1B6rWB7ChM8N4RNhXkI7fGoGPDcStleS8/view?usp=drive_link
https://drive.google.com/file/d/1R_LTwGuIHhV4Q7JgSDd-NK_m9AdhgziC/view?usp=drive_link
https://drive.google.com/file/d/1StpaIYfxcZ226JlSsjmQ5D7SsP1b-5fe/view?usp=drive_link

The transformer you have is not a centertapped transformer. If you found a transformer , marked as 12V-0-12V, it's good for the inverter

 

There are many designs of variable voltage DC power supplies available.
Most of the older versions use a transformer powered by the mains voltage, which provides isolation in addition to the voltages to be used to supply the desired voltage. So a mains powered variable supply that is safe from the hazard of mains power is entirely possible.
There are also mains powered switcher supplies with variable output voltages. Most of Those supplies are isolated from the mains input, but they are much more complex than I would choose to copy.

 

Consider that if the TS wants to use a switcher power supply that almost every circuit element in a switcher is important, and that if the connection has excessive resistance then the efficiency will be much lower if the supply even works at all. And if the connections with the inductor and the IRF240 are not adequate then the efficiency will be low. So the TS must understand how the circuit works and what connections are important. And that RC connection across the mosfet is rather criticalto the circuit functioning.

 

What are the input and output voltages of this transformers?
https://drive.google.com/drive/folders/1oakDnghLBgVyHbiZg-0uWQUNN01fmi1w?usp=share_link