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Transformerless Power Supply – Circuit Schematic
Transformerless Power Supply
WARNING: Don`t  touch any part of the circuit when the circuit is running (connected to the powerline), this circuit is not isolated from mains supply. This.....
The Full-Wave Rectifier and Averaging Filter – Circuit Schematic
The Full-Wave Rectifier and Averaging Filter
The heart of an average reading, rms calibrated AC voltmeter is shown in figure below. It`s a rectifier and averaging filter. We can remove the averaging functi...
ON/OFF Power Control with Single Pushbutton – Circuit Schematic
ON/OFF Power Control with Single Pushbutton
Today, simplicity and minimum controls is required for design of a handheld device. It will be very useful if a circuit allow us to turn the power on or of.....
Low-Cost AC Supply – Circuit Schematic
Low-Cost AC Supply
Applying the filtered and rectified AC input to a high-input-voltage linear regulator is the simplest way to produce low current level from an AC source.....
Low-Cost AC Supply – Circuit Schematic
Low-Cost AC Supply
Applying the filtered and rectified AC input to a high-input-voltage linear regulator is the simplest way to produce low current level from an AC source.....
Low Noise Power Supply for Audio Circuits – Circuit Schematic
Low Noise Power Supply for Audio Circuits
This low noise audio power supply circuit can reduces noise and ripple voltage by 40dB over the 100Hz to 20kHz audio range. In portable application such as.....
Low Noise Power Supply for Audio Circuits – Circuit Schematic
Low Noise Power Supply for Audio Circuits
This low noise audio power supply circuit can reduces noise and ripple voltage by 40dB over the 100Hz to 20kHz audio range. In portable application such as.....
Automatic Switching for Battery USB Power Connection – Circuit Schematic
Automatic Switching for Battery USB Power Connection
This is a simple circuit for automatic switchover between battery and USB port. This circuit uses more general step-up converter architecture. Compared with an....
Automatic Switching for Battery USB Power Connection – Circuit Schematic
Automatic Switching for Battery USB Power Connection
This is a simple circuit for automatic switchover between battery and USB port. This circuit uses more general step-up converter architecture. Compared with an....
52W SMPS AC-DC Adapter – Circuit Schematic
52W SMPS AC-DC Adapter
One AC-DC converter that provides a good accuracy is SMPS AC-DC converter. Test data shows efficiency of 85. 4% at 230 Vac input and 6A output current and 83. 2...
52W SMPS AC-DC Adapter – Circuit Schematic
52W SMPS AC-DC Adapter
One AC-DC converter that provides a good accuracy is SMPS AC-DC converter. Test data shows efficiency of 85. 4% at 230 Vac input and 6A output current and 83. 2...
Laser Diode Driver – Circuit Schematic
Laser Diode Driver
We can use a voltage-controlled current source to implement a laser diode driver. Compared with a a Switched (PWM) drivers, this simple  linear laser diode.....
Laser Diode Driver – Circuit Schematic
Laser Diode Driver
We can use a voltage-controlled current source to implement a laser diode driver. Compared with a a Switched (PWM) drivers, this simple  linear laser diode.....
Low Voltage Power Supply – Circuit Schematic
Low Voltage Power Supply
This is a power supply circuit that produce voltage 12 to 24 V. It is very simple, doesn`t need regulator just bridge rectifier, filter capacitor and transforme...
Low Voltage Power Supply – Circuit Schematic
Low Voltage Power Supply
This is a power supply circuit that produce voltage 12 to 24 V. It is very simple, doesn`t need regulator just bridge rectifier, filter capacitor and transforme...
Variable Power Supply 1.2-55 Volt Uses Switching Technology for High Efficiency – Circuit Schematic
Variable Power Supply 1.2-55 Volt Uses Switching Technology for High Efficiency
Designing wide range variable power supply using linear regulator is easy, but suffer terrible efficiency when it should regulate 60 Volt constant source .....
Variable Power Supply 1.2-55 Volt Uses Switching Technology for High Efficiency – Circuit Schematic
Variable Power Supply 1.2-55 Volt Uses Switching Technology for High Efficiency
Designing wide range variable power supply using linear regulator is easy, but suffer terrible efficiency when it should regulate 60 Volt constant source .....
Power Supply Diagram MZ-700 – Circuit Schematic
Power Supply Diagram MZ-700
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Power Supply Diagram MZ-700 – Circuit Schematic
Power Supply Diagram MZ-700
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Precision Power Supply 0-40V 0-2A adjustable current limiting – Circuit Schematic
Precision Power Supply 0-40V 0-2A adjustable current limiting
This Precision Power Supply is a nice addition on your workbench as primary, or in my case, a supplementary power supply. With zero to 40V and 2A with adjustabl...