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Auto Generator Regulator Circuit – Circuit Schematic
Auto Generator Regulator Circuit
This regulator is for the purpose of controlling a dc generator. The field configuration is that one side of the field is grounded. D4 prevents the battery fro...
Variable Voltage Regulator – Circuit Schematic
Variable Voltage Regulator
The op amp is wired as a 2 noninverting dc amplifier with a gain that is determined by the R3/R2 ratio. The inp...
Regulator Circuit – Circuit Schematic
Regulator Circuit
The special characteristic of this regulator is that the output voltage can be adjusted down to 0 V. The regulation is pr...
Fixed-Current Regulator – Circuit Schematic
Fixed-Current Regulator
This fixed 1-mA current source delivers a fixed current to a load connected between Ql"s collector and ground; the ...
Common Hot-Lead Regulator – Circuit Schematic
Common Hot-Lead Regulator
This circuit derives 5 Vdc from 2-AA cells—even at their end-life voltages of 1.05 V, and is approximately 80% ef...
Lm317 Regulator Sensing – Circuit Schematic
Lm317 Regulator Sensing
The optocoupler (as shown) provides load sensing for a 3-terminal regulator, such as the LM317 series. Rl sets a cu...
High- Or Low-Input Regulator – Circuit Schematic
High- Or Low-Input Regulator
This regulator provides 12 V at 1 A out with an input voltage of 8 to 20 V. Output voltage can be changed by c...
Efficient Negative Voltage Regulation – Circuit Schematic
Efficient Negative Voltage Regulation
Many applications require highly efficient negative-voltage post regulators with low dropout voltage ...
Switching Improves Regulator Efficiency – Circuit Schematic
Switching Improves Regulator Efficiency
In this circuit, a full-wave bridge is switched to a full-wave center tap to reduce regulator dissi...
Switch-Mode Voltage Regulator – Circuit Schematic
Switch-Mode Voltage Regulator
Switch-mode power supplies offer the benefit of a much greater efficiency than obtainable with a traditional ...
2.5A/1.25 To 25V Regulated Power Supply – Circuit Schematic
2.5A/1.25 To 25V Regulated Power Supply
This power supply uses an LM317J adjustable regulator and an MJ2955 pass transistor. Ql and U2 as...
Diode Cmos Stabilizer – Circuit Schematic
Diode Cmos Stabilizer
The simple diode network can stabilize the voltage supplied to CMOS circuitry from a battery. D1 and D2 must have a c...
Output Stabilizer – Circuit Schematic
Output Stabilizer
Optically isolated SMPS and dc-to-dc converters face the variance of output voltage owing to the change of transmission c...
Long-Line Ir Drop-Voltage Recovery – Circuit Schematic
Long-Line Ir Drop-Voltage Recovery
This circuit provides a unique solution to a common system-level power distribution problem: When the su...
Voltage-Level Indicator – Circuit Schematic
Voltage-Level Indicator
Three-terminal regulator device (LM78LXX) has Vout = Vm until the input rises 1.5 to 2 V above the output when the ...
Voltage Regulator For Cars And Motorcycles – Circuit Schematic
Voltage Regulator For Cars And Motorcycles
This regulator circuit can be used on an alternator that has one field terminal grounded. When +...
Digitally-controlled-voltage-reference – Circuit Schematic
Digitally-controlled-voltage-reference
This circuit shows a simple method of achieving a voltage reference which can be trimmed using an 8bit DAC with an on-chip voltage reference. The analogue outp...
Voltage-monitor – Circuit Schematic
Voltage-monitor
If the battery voltage exceeds about 11 V, current flows through R1, D1, and R2. The voltage produced as a result of current flow through R2 is sufficient to...
Over-under-voltage-monitor – Circuit Schematic
Over-under-voltage-monitor
Any potential from 1 to 15 V can be monitored with this circuit. Two lamps alert any undesirable variation. The voltage differential from lamp tum-on to tum-of...
12-16V-converter – Circuit Schematic
12-16V-converter
Many devices operate from a car"s 12-V electrical system. Some require 12 V; others require some lesser voltage. An automobile battery"s output can vary from 1...