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Dual Polarity Power Supply +/- 15V based Transistors

This Dual supply circuit is suitable for installation of power analog (audio or measurement), it provides a bipolar voltage  with voltage source  between 20 and 50 V (in audio power amp, for example)....

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Lithium Ion (Li-Ion) Battery charger

We can charge Ni-Cd or Ni-MH simply by placing a series resistor to limit current from the power source to make efficient loading. But not so with lithium ion cell (Li-Ion) which has a capacity greater...

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57V variable power supply up to 1.5 A

In each workshop you must have a source that is able to provide each current and voltage in a quite acceptable range of possibilities. This variable power supply device goes beyond the conventional...

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Symmetric 12V to 5V converter

With this simple DC voltage converter circuit we can reduce 12v to 5v  symmetric voltage and can use existing resources. Here used 3-Terminal Adjustable Regulator LM317  for positive regulation and...

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Converter 220V AC to 40kV AC

This device allows up to 40,000 volts by 220V AC. The AC to AC Converter circuit is powered from the mains through primary transformer (220-24) to isolate the network while reducing the input voltage....

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Converter 9V to 13.5kV

This high voltage source is formed by an inverter, around the transistor, which provides pulses of 150V to the inverter formed by the thyristor and capacitor in series with the transformer 2. This...

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1V-27V 3A Variable DC Power Supply Circuit Diagram

Above diagram is the scheme of variable DC power supply with output range of 1V to 17V. This power supply is used very few components, the power supply will be so easy to build. Serial power...

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1.5A Negative Adjustable Power Supply

This is the circuit diagram of negative adjustable power supply based LM337T. This circuit can be used for devices which required negative supply to work. The regulator LM337T is capable of supplying...

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Clik here to view.

1.2V – 57V Regulated DC Power Supply Circuit

This is the circuit diagram of multi purpose regulated dc power supply which featured with short circuit protection. The electronic workshop is necessary to have a source capable of providing any...

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1.5A Negative Adjustable Power Supply

Components List: Resistors (0.25W, 5%) R1 = 330 R2 = 1K VR1 = 10K 10-turn trimpot Capacitors C2,4 = 100nF ceramic C12 = 200uF 50V electrolytic C3,5 = 10uF 63V electrolytic Semiconductors D1-6 = 1N5403...

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Car DC to DC Converter for laptops

Laptops today are the what is called notebook computers, which now is becoming popular. Laptops can be brought into the bag making it suitable for business trips. And even as the “home entertainment...

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Clik here to view.

Dual Polarity Power Supply +/- 15V based Transistors

This Dual supply circuit is suitable for installation of power analog (audio or measurement), it provides a bipolar voltage  with voltage source  between 20 and 50 V (in audio power amp, for example)....

View Article

Image may be NSFW.
Clik here to view.

Lithium Ion (Li-Ion) Battery charger

We can charge Ni-Cd or Ni-MH simply by placing a series resistor to limit current from the power source to make efficient loading. But not so with lithium ion cell (Li-Ion) which has a capacity greater...

View Article


Image may be NSFW.
Clik here to view.

57V variable power supply up to 1.5 A

In each workshop you must have a source that is able to provide each current and voltage in a quite acceptable range of possibilities. This variable power supply device goes beyond the conventional...

View Article

Image may be NSFW.
Clik here to view.

Symmetric 12V to 5V converter

With this simple DC voltage converter circuit we can reduce 12v to 5v  symmetric voltage and can use existing resources. Here used 3-Terminal Adjustable Regulator LM317  for positive regulation and...

View Article


Image may be NSFW.
Clik here to view.

Converter 220V AC to 40kV AC

This device allows up to 40,000 volts by 220V AC. The AC to AC Converter circuit is powered from the mains through primary transformer (220-24) to isolate the network while reducing the input voltage....

View Article

Image may be NSFW.
Clik here to view.

Converter 9V to 13.5kV

This high voltage source is formed by an inverter, around the transistor, which provides pulses of 150V to the inverter formed by the thyristor and capacitor in series with the transformer 2. This...

View Article


Image may be NSFW.
Clik here to view.

1V-27V 3A Variable DC Power Supply Circuit Diagram

Above diagram is the scheme of variable DC power supply with output range of 1V to 17V. This power supply is used very few components, the power supply will be so easy to build. Serial power...

View Article

Image may be NSFW.
Clik here to view.

1.5A Negative Adjustable Power Supply

This is the circuit diagram of negative adjustable power supply based LM337T. This circuit can be used for devices which required negative supply to work. The regulator LM337T is capable of supplying...

View Article

Image may be NSFW.
Clik here to view.

1.2V – 57V Regulated DC Power Supply Circuit

This is the circuit diagram of multi purpose regulated dc power supply which featured with short circuit protection. The electronic workshop is necessary to have a source capable of providing any...

View Article
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