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Regulator Circuits, Page 7
Regulators:  #'s      A      B - C      D - H      I - L      M - Q      R - S      T - Z

Last Updated on: Wednesday, December 20, 2017 02:13 PM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Regulated Charge Pump Delivers 50ma -  Maxim Application Note #35 (app note added 5/08)
Regulator Circuit Generates Both 3.3V & 5V Outputs from 3.3V or 5V to Run Computers & RS-232 -  DN71  Design Notes (Linear Technology) (app note added 1/06)
Regulator Generates as Many as Four Voltages -  08/03/95 EDN-Design Ideas.... EDN is migrating links. This link is not verified.  Search the "title" + EDN for new link.
Regulator Generates SubBandgap Voltages -  01/02/97 EDN-Design Ideas 100-mA regulator that uses a dual linear-regulator IC to produce output voltages below1.25V from2.9 to5.5V input-voltage range.... EDN is migrating links. This link is not verified.  Google the "title" + EDN for new link.
Regulator has One Active Part -  03/16/95 EDN-Design Ideas.... EDN is migrating links. This link is not verified.  Search the "title" + EDN for new link.
Regulator Provides ±12V -  10/23/97 EDN Design Idea   Simple circuit can provide ±12V from a5V input using only one switching-regulator IC and a few off-the-shelf…. [Design Idea by Musiri Shrivathsan, National Semiconductor Corp, Santa Clara, CA]
Regulator Provides ±12V from 5V Source -  National Semiconductor Application Note  (app note added 2/06)
Scheme adds sequencing and shutdown control to regulator -  30-Oct-03 Issue of EDN  Modern microprocessor- or FP-GA-based circuits require separate and independent power-supply voltages for the core and the I/O circuits. Some devices require stringent control of the turn-on characteristics and sequencing of these multiple power supplies to avoid internal parasitic current flows and consequent latch-ups.... [Design Idea by Said Jackson, Equator Technologies Inc, Campbell, CA]
Secondary Side Dual Output Controller Tightly Regulates Two Isolated Outputs -  DN1000  Design Notes (Linear Technology)....[App Note]
series regulator with Q900 -  This is a series regulator with Q900 being the control element, Q901 a driver, and Q902 an error amp. ZD900 forms the emitter reference voltage source. Since the generated high voltage and other voltages are linked by means of the magnetic field of T900, any change in H.V. will be reflected back to all of the other voltages....
Servo loop improves linear regulator efficiency -  8-Jul-04 Issue of EDN  Linear regulators are easy to implement and have better noise and drift characteristics than switching approaches. Their largest disadvantage is inefficiency  excess energy dissipated as heat. Several well-known techniques are available to minimize the input-to-output voltage across a linear regulator.... [Design Idea by Aurel Gontean, Technical University, Timisoara, Romania]
Simple High Efficiency Step-Down Switching Regulator -  DN73  Design Notes (Linear Technology) (app note added 1/06)
Simple Regulator has one Active Part -  03/16/95 EDN-Design Ideas.... EDN is migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
Simple Regulator Provides ±12V -  10/23/97 EDN Design Idea  Simple circuit can provide ±12V from a5V input using only one switching-regulator IC and a few off-the-shelf [Design Idea by Musiri Shrivathsan, National Semiconductor Corp, Santa Clara, CA]
Simple Regulator Provides ±12V from 5V Source -  National Semiconductor Application Note  (app note added 2/06)
Simple temperature regulated FAN speed Controller -  This regulator uses a P-FET to change the positive supply voltage to a FAN an NTC resistor mounted on the device that needs cooling will change the fan speed, the temperature on the heat sink will therefore be constant, while the FAN speed will change, depending on power disipated The RPM output signal from most FAN types will continue to function,....(schematic added 05/08)
Simple Ultra-Low Dropout Regulator -  DN32  Design Notes (Linear Technology) (app note added 1/06)
Simple Variable Voltage Source -  The high current regulator below uses an additional winding or a separate transformer to supply power for the LM317 regulator so that the pass transistors can operate closer to saturation and improve efficiency. For good efficiency the voltage at the collectors of the two parallel 2N3055 pass transistors....(added 4/05)
Small Motor Speed Regulator  -  Reverse engineered circuit diagram of a motor speed regulator out of a portable tape recorder containing a single motor for all functions.  This circuit works amazingly well, keeping the motor speed constant regardless of shaft load and battery voltage.... [Circuit by Stepan Novotill]
Solar panel regulator -  A simple but good linear shunt voltage regulator for solar panels, that includes deep-discharge protection.  This design is for 12V systems with panels delivering up to 7A, but it can be easily scaled for other sizes. I have built several of these regulators. [Manfred Mornhinweg]
SOT-23 Switching Regulator with Integrated 1A Switch Delivers High Current Outputs in a Small Footprint -  DN232  Design Notes (Linear Technology) (app note added 1/06)
Step-Down Switching Regulators -  AN35 Linear Technology Discusses the LT107)4, an easily applied step-down regulator IC. Basic concepts and circuits are described along with more sophisticated applications. Six appended sections cover LT107)4 circuitry detail, inductor and discrete component selection, current measuring techniques, efficiency considerations and other topics....(appnote 2/06)
Subscriber Line Card in a Distributed Control Switching System -  National Semiconductor Application Note  (app note added 2/06)
Supply Saves Circuits from Lax Predecessors -  11/23/94 EDN-Design Ideas....The lab supply in Fig 1 automatically sets its output voltage to zero whenever you switch it on. Thus, the lab supply can't fry your circuit if the previous user left the voltage turned up too high. The circuit supplies 1 to 25V dc because it uses an LM317 regulator. When you turn on the supply, the bridge develops a voltage.... EDN is migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
Switching regulator 2 -  (app note added 2/06)
Switching regulator charges NiMH batteries -  12/21/00 EDN-Design Ideas..../ PDF contains multiple circuits scroll to find this circuit.... EDN is migrating links. This link is not verified.  Google the "title" EDN for new link.
Switching Regulator Circuit Collection -  AN30 Linear Technology Switching regulators are of universal interest. Linear Technology has made a major effort to address this topic. A catalog of circuits has been compiled so that a design engineer can swiftly determine which converter type is best.  This catalog serves as a visual index to be browsed through for a specific or general interest.
Switching Regulator Controls CCFT -  02/16/95 EDN-Design Ideas....You can control the current in a cold-cathode fluorescent tube (CCFT]and, hence, its brightness with a switching-regulator IC.... EDN is migrating links. This link is not verified.  Search the "title" EDN for new link.
Switching regulator drives robot motor -  05/13/99 EDN-Design Ideas....The circuit in Figure 1 shows an example of how you can use an integrated switching regulator (ISR] to efficiently vary the speed of a permanent-magnet dc motor. In this application, the rotating head of a robot senses the presence of an oncoming object (perhaps a human]. If the robot senses an object, it slows the rotation....PDF contains many circuits, scroll to find this one.… [Design Idea by Donald Comiskey, Power Trends Inc, Warrenville, IL]
Switching regulator forms constant-current-source -  30-May-02 Issue of EDN  Many applications require current sources rather than voltage sources. When you need a high-current source, using a linear regulator is inadvisable, because of the high power dissipation in the series resistor. To solve the wasted-power problem, you can use a switch-mode regulator. The circuit of Figure 1 uses IC1, an LM2576 adjustable regulator.... [Design Idea by Stefan Strozecki, Institute of Telecommunications, Bydgoszcz, Poland]
Switching Regulator Generates Both Positive & Negative Supply with a Single Inductor: Design Notes Linear Technology added 01/06 -  DN47  Design Notes (Linear Technology)  (app note added 2/06)
Switching Regulator Output goes BeLow VREF -  03/17/94 EDN-Design Ideas....The feedback arrangement of typical switching regulators doesn't allow the regulated outputs to go lower than the reference voltage. If you try to lower the output by modifying the feedback network, the compensation components the manufacturer recommends may no longer stabilize the regulator's.... EDN is migrating links. This link is not verified.  Google the "title" EDN for new link.
Switching Regulator turns into Light Source -  07/17/97 EDN-Design Ideas....Simple external feedback circuit transforms a switching regulator into a constant-intensity light source.... EDN is migrating links. This link is not verified.  Google the "title" EDN for new link.
Switching Regulators for Poets -  AN25 Linear Technology Subtitled "A Gentle Guide for the Trepidatious," this is a tutorial on switching regulator design. The text assumes no switching regulator design experience, contains no equations, and requires no inductor construction to build the circuits described. Designs detailed include flyback, isolated telecom, off-line, and others....
Sync. Buck with Integrated FET Forward Dual Sync. Buck Reference Design -  Sync. Buck with Integrated FET, Forward, Dual Sync. Buck with Vin of 48. Vout of 15 V, 3.3 V, 1.8 V, 1.5 V. The output power is 47 W. (added 3/05)
Synchronized Regulator Produces Coherent Noise -  03/17/94 EDN-Design Ideas....By using a gated-oscillator architecture instead of a clocked-PWM one, gated-oscillator-type switching regulators permit high efficiency over extended ranges of output current.  This architecture eliminates the housekeeping currents associated with the continuous operation of fixed-frequency designs. Gated-oscillator regulators.... EDN is migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
Regulators:  #'s      A      B - C      D - H      I - L      M - Q      R - S      T - Z


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