Reference Electronic Circuits

Reference Circuits, Page 2
Reference: #'s - A B-C D-N O-R S - Z
Last Updated on: Monday, October 03, 2011 06:07 PM

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

Bleeper Box for time reference - (electronic circuit added 4/05)

Boost Reference Design - This design uses UCC38C43 as a boost power supply controller. It operates from a 12 volt input and generates a 24 volts (or higher) output voltage. The input voltage can be widely varying as UCC38C43 can sustain a 20 volt maximum input. (added 3/05)

Buck boost regulator suits battery operation - 4-Sep-03 Issue of EDN A buck/boost converter can step a voltage up or down. Such a converter is appropriate for battery-powered applications. One application derives a regulated 14.1V at 1A from 12V solar panels with 9 to 18V.... [Design Idea by Kahou Wong, On Semiconductor, Phoenix, AZ]

Buck Reference Design - This reference design is a buck converter that can deliver up to 2A of continuous current at -24 V from an input range of -35 V to -75 V. By referencing UCC3813 controller to negative input rail, N-channel MOSFET is easily driven. This design achieves a peak efficiency greater than 95%. The UCC3813 provides current mode control for excellent line and load transient response. (added 3/05)

Buck regulator operates without a dedicated clock - 21-Aug-03 Issue of EDN Most switching regulators rely on a dedicated clock oscillator to determine the switching frequency of operation. A dedicated oscillator circuit within the power controller usually generates the clock signal. A class of hysteretic switching regulators can actually operate at a relatively fixed frequency without a clock, even with changing input-line and output-loading conditions.... [Design Idea by Robert Bell, National Semiconductor, Phoenix, AZ]

Buck Regulator Terminates Fast Data Buses - 07/20/95 EDN-Design Ideas The limitations of 5 and 3.3V CMOS buses are spurring the development of high-speed, low-voltage buses for the next generation of computers. These buses, such as Futurebus and Rambus, require low-voltage supply rails to reduce signal-voltage swings. Other buses, such as CTT (center-terminated transceiver) and HSTL (high-speed transceiver logic), have center termination and, therefore, require a power source that can sink current as well as source it.... [Design Idea by Bruce Moore, Maxim Integrated Products, Sunnyvale, CA]

Buck Regulator uses Step Up Controller - 11/09/95 EDN-Design Ideas....The circuit in Fig 1uses a step-up (boost) dc/dc controller in a negative buck-regulator application. The circuit’s function is to power the laser diode in an optical amplifier/booster unit, a job for which no commercial IC is available. The anode of the laser diode connects to ground, so the supply voltage must be negative and must deliver 160 to 750 mA. Although the boost-regulator IC operates in a buck-regulator circuit, its standard connections permit proper control of Q1. However, you need an op amp.... [Design Idea by Massimo De Marco, Maxim Integrated Products Cusano Milanino, Italy]

Buck/Boost Reference Design - This reference design presents an alternative to typical boost power regulator. A buck converter IC is used to generate a higher voltage needed by white light LED power from a Ni-Cd battery. This circuit operates by turning high switch on, connecting battery voltage across inductor. Once sufficient energy is stored in inductor,....(added 3/05)

Buck-boost regulator suits battery operation - 09/04/03 EDN-Design Ideas....A buck/boost converter can step a voltage up or down. Such a converter is appropriate for battery-powered applications. One application derives a regulated 14.1V at 1A from 12V solar panels with 9 to 18V variation. In this type of battery application, efficiency is an important factor; hence, this design uses an inexpensive synchronous-rectifier-based MC33166/7 circuit.... [Design Idea by Kahou Wong, On Semiconductor, Phoenix, AZ]

Cheap Pushbutton replaces Rotary Switch - 26-Oct-00 Issue of EDN-Design Ideas....The problem of setting any one of four modes of aµC-operated process has a straightforward solution Have theµC check the states of some 4 bits of aµC.… [Design Idea by Abel Raynus, Armatron International Inc, Melrose, MA]

Chopping Reduces Reference’s Supply Current - 04/10/97 EDN-Design Ideas....The 10V precision reference, IC3, in Figure 1 has temperature drift of approximately 0.6 ppm/�C and good long-term stability. However, because of its zener-based design, this reference needs more than 4 mA of supply current. To reduce this current, the circuit in Figure 1 supplies the reference with chopped power. This scheme lowers the mean supply.... [Design Idea by Hartmut Henkel, von Hoerner & Sulger GmbH, Schwetzingen, Germany]

Circuit Measures Small Current in DC Servo Motor - 12/06/01 EDN-Design Ideas....The simple Circuit design in Figure 1 lets you measure all components of a current flowing in a dc servo motor. The rectified output of the circuit uses ground as a reference, so you can measure the output.... / (Circuit design added 01/02/03] EDN is migrating links. This link is not verified. Search the "title" + "EDN" for new link.

Circuit provides ADSL frequency reference - 05/25/00 EDN-Design Ideas.... EDN is migrating links. This link is not verified. Search the "title" + "EDN" for new link.

Circuit provides reference for multiple ADCs - 24-Jan-02 Issue of EDN The achievable accuracy for systems with multiple ADCs depends directly on the reference voltages applied to the ADCs. Medical-ultrasound-imaging systems, for example, commonly include a large number of ADCs in the system's beam-former electronics, with the ADCs usually organized in groups of 16, 24, 32, and so on.... [Design Idea by Ron Gatzke and Tanja Hofner, Maxim Integrated Products, Sunnyvale, CA]

Circuit uses two reference voltages to improve hysteresis accuracy - 7-Jan-10 Issue of EDN Increase the hystereis of your comparator by switching between two reference voltages.... [Design Idea by Marián Stofka, Slovak University of Technology, Bratislava, Slovakia]

Reference: #'s - A B-C D-N O-R S - Z