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Fast Electronic Fuse – Circuit Schematic
Fast Electronic Fuse
A fast electronic fuse designed to operate on 230V AC with an adjustable trip current. When the current through the load exceeds a level determined by the posit...
Dual Regulated Power Supply 15v – Circuit Schematic
Dual Regulated Power Supply 15v
In this circuit, the 7815 regulatates the positive supply, and the 7915 regulates the negative supply. The transformer should have a primary rating of 240/220 v...
9 Volt 2 Amp PSU with 78S09 – Circuit Schematic
9 Volt 2 Amp PSU with 78S09
The circuit will work without the extra components, but for reverse polarity protection a 1N5400 diode is provided at the input, extra smoothing being provided ...
1.3 Volt Power Source – Circuit Schematic
1.3 Volt Power Source
This is a replacement power source for 1.3V mercury cells or other small batteries. It has many uses and I use this circuit in my computer to power a front pane...
12 Volt 30 Amp PSU – Circuit Schematic
12 Volt 30 Amp PSU
Using a single 7812 IC voltage regulator and multiple outboard pass transistors, this power supply can deliver output load currents of up to 30 amps. The input ...
Pedalboard Power Supply – Circuit Schematic
Pedalboard Power Supply
Each of these ways have their own advantages and disadvantages. The multiple transformer way is easy to start small and work up to only as many power supplies a...
power supply (300V, 50mA + 6.3V, 3A max) – Circuit Schematic
power supply (300V, 50mA + 6.3V, 3A max)
This regulated power supply was built as a simplified outboard version of a PSU in my first phono stage. Replacing hexfreds with tube rectifier eliminates the n...
Self switching Power Supply – Circuit Schematic
Self switching Power Supply
One of the main features of the regulated power supply circuit being presented is that though fixed-voltage regulator LM7805 is used in the circuit, its output ...
Electronic Fuse / Low Pass Filter – Circuit Schematic
Electronic Fuse / Low Pass Filter
This is adjustable elctronic fuse that can be used to protect power supplies from short circuits or can be also used to limit the current usage. It can be adjus...
PC 12V ADAPTER – Circuit Schematic
PC 12V ADAPTER
This circuit provides a short circuit protected power supply from PC 12V supply voltage. This is particularly handy when working with PC interfacing projects....
DC Supply – Circuit Schematic
DC Supply
The circuit is a linear regulator providing galvanic isolation from main line through the use of isolation transformer. Quite safe for experimenting with AC vol...
Mic Phantom Supply – Circuit Schematic
Mic Phantom Supply
This is a very simple design for a phantom supply. This design will work with microphones that have no problem with the phantom supply being only 15V. It also h...
PSU Designer II – Circuit Schematic
PSU Designer II
PSU Designer II is designed to help you with the design of simple linear (unregulated) mains power supplies, as often found in tube amplifiers....
12 Volt, 10 Amp Switching Power Supply – Circuit Schematic
12 Volt, 10 Amp Switching Power Supply
The switching power supply, shown in the schematic, provides 12 volts, at 10 amps, maximum, using a discrete transistor regulator with an op-amp functioning as ...
12 Volt, 10 Amp Switching Power Supply – Circuit Schematic
12 Volt, 10 Amp Switching Power Supply
The switching power supply, shown in the schematic, provides 12 volts, at 10 amps, maximum, using a discrete transistor regulator with an op-amp functioning as ...
The 25-30kV DC Generator – Circuit Schematic
The 25-30kV DC Generator
This High Voltage power supply is able to generate up to 25-30kV DC Output from a 12-24v DC input. With a fully adjustable DC input power supply (0-24V/4A), it ...
The 25-30kV DC Generator – Circuit Schematic
The 25-30kV DC Generator
This High Voltage power supply is able to generate up to 25-30kV DC Output from a 12-24v DC input. With a fully adjustable DC input power supply (0-24V/4A), it ...
Mosfet stabilized power supply – Circuit Schematic
Mosfet stabilized power supply
One very important Part of a Tube Amplifier is the Power Supply. It is crucial for the quality of the whole system. Especially beginners encounter problems like...
Mosfet stabilized power supply – Circuit Schematic
Mosfet stabilized power supply
One very important Part of a Tube Amplifier is the Power Supply. It is crucial for the quality of the whole system. Especially beginners encounter problems like...
High Voltage High Current Power Supply – Circuit Schematic
High Voltage High Current Power Supply
# The circuit can produce about 250-500mA at 2KV, depending on the transformer. # For C1, you can use the capacitor out of an old microwave. # This circui...