78L05 3-Terminal Positive Regulators
#78L05
#voltage regulator
#positive regulator
#3-terminal
#5V regulator
#linear regulator
#power management
#electronics
#circuit protection
#DC power
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DC Power Supply 9 volt using TIP31 transistor
This is a DC power supply circuit designed to regulate 9 volts and provide a current output ranging from 1 amp to 2 amps. The circuit utilizes a modified TIP31 transistor, although alternative transistors such as TIP41, MJE3055, or 2SC1061...
Logic PSU with Overvoltage Protection
The 5 volt regulated power supply for TTL and 74LS series integrated circuits has to be very precise and tolerant of voltage transients. These ICs are easily damaged by short voltage spikes. A fuse will blow when its current rating...
Voltage Regulator Calculation
Before designing an adjustable voltage regulator into a circuit or performing a redesign, it is necessary to calculate the values for two resistors. While this process is straightforward, sourcing the appropriate resistors may present challenges. Fortunately, a method exists to...
ic-7805 based 5V breadboard mini PSU circuit with explanation
A micro power supply unit (PSU) is designed to power a breadboard with a voltage output of 5 volts. It can be connected to a 9V battery, a 12V source, or any other direct current (DC) power supply ranging from...
Increasing Regulator Current
Although the 78xx series of voltage regulators are available with different current outputs, you can boost the available current output with this circuit. A power transistor is used to supply extra current to the load, maintaining a constant voltage. Currents...
Control a processor`s power supply in real time
In battery-powered applications in which power management is key, a microprocessor may adjust its core voltage corresponding to an increase or a decrease in clock speed, allowing full processing power when necessary but not wasting excess power when idle. The...
Variable 3 - 24 Volt / 3 Amp Power Supply circuit
This regulated power supply can be adjusted from 3 to 25 volts and is current limited to 2 amps as shown, but may be increased to 3 amps or more by selecting a smaller current sense resistor (0.3 ohm). The...
Regulator Circuit
The unique feature of this regulator is that the output voltage can be adjusted down to 0 V. The regulation is provided by an integrated regulator type LM317. Typically, in supplies that can be adjusted to 0 V, this IC...
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 voltage. Below pictures show the example of input/output terminal connections, labeling and components placement in the...