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Full-Wave Rectifier Operates to 200 MHz - 07/20/95 EDN Design Ideas: The circuit in Figure 1 uses current-feedback amplifiers to implement a wideband full-wave rectifier for applications such as a control/AGC system reference or as an amplitude indicator. Putting the full-wave-rectifier diodes in the feedback loop of an op amp works better than does using simple diode-based rectifiers. The op amp's loop gain Design by Rea Schmid, Comlinear Corp, Fort Collins, CO
Generate Boost Rails In a Bridge-Rectifier - 11/16/12 EDN Design Ideas: Bridge ac inputs have the ability to sink and source current with reference to the bridge-rectifier outputs. Many single-voltage power supplies consist of a transformer, a rectifier, and a filter capacitor, as shown in Figure 1. This circuit is relatively inexpensive and easy to build but supplies only a single voltage. Circuits employing op amps, data converters, and other analog circuit blocks often require additional voltages to operate. These extra voltages can be either higher than the main supply voltage or negative. Design by Horst Koelzow, Calgary, Alberta
Good 12 Volt Switching Power Supply - This is a good Circuit for those persons needing to Boost or drop a voltage. The Output is High Frequency, but can be Rectified and Filtered to give DC Out. When Rectifying High Frequencies, You MUST use the Appropriate types of HiGH SPEED Diodes to handle these frequencies. Normal diodes WiLL OVERHEAT and Burn out. __ Designed by G.L. Chemelec
Greatly improve dV/dt immunity of SCRs - 12/09/13 EDN Design Ideas: improve dV/dt immunity of SCRs by three orders of magnitude - The SCR is a switching semiconductor device, whose theoretical basics were published by Moll et al. in 19561. Design by Marian Stofka
HF linear Amplifier with MRF454 - 100W HF Linear Amp - Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos
High Current Power Supply - Since my page was first posted, I have received a number of emails asking about a high current power supply. I looked around, but couldn't find one that was suitable. So, I designed this. it is a linear supply, which might have a few of you rolling your eyes, but it takes very few parts, is simple to build and can supply huge currents. __ Contact IQ Technologies
High current regulated power supply -
Scroll to find this circuit: 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 should be close to the output voltage. The LM317 requires a couple extra volts on the input side, plus the emitter/base drop of the 3055s, plus whatever is lost across the (0.1ohm) equalizing resistors (1volt at 10 amps) , so a separate transformer and rectifier/filter circuit is used that is a few volts higher than the output voltage __ Designed by Bill Bowden
High dynamic range RF Amplifier - Schematic only, no circuit description __ Designed by © 2001 - YO5OFH, Csaba Gajdos
High Efficiency Linear & Switching Solutions for Splitting a Digital Supply - DN172 Design Notes __ Linear Technology/Analog Devices
High Efficiency Linear Regulators - AN32 Presents circuit techniques permitting high efficiency to be obtained with linear regulation. Particular attention is given to the problem of maintaining high efficiency with widely varying inputs, outputs and loading. Appendix sections review component characteristics and measurement methods. __ Linear Technology/Analog Devices
High IP3, wide band, balanced linear power Amplifier HELA-10 - AN-60-009 Application Note __ MiniCircuits.com
High side PWM Motor/Light Controller - The diagrams are for 12V operation only and there are high side (common ground) and low side (common +12V) versions. The low side version of the circuit uses an N Channel FET, the high side version of the circuit uses a P Channel FET. N Channel devices tend to handle more current than P Channel devices, they are also less expensive. The high side version of the circuit is useful when one side of the load has to be grounded __ Designed by G. Forrest Cook
High-Speed Rectifier Uses No Diode - 03/30/95 EDN Design Ideas: Fig 1 shows a high-speed, full-wave rectifier-or absolute-value circuit-that uses a high-speed clamping amplifier, IC 2. This circuit is faster and performs better than rectifiers employing diodes in their amplifiers' feedback paths. These diode-based circuits have limitations at lower signal-input levels and higher bandwidths. These limitations Design by Paul Hendricks, Analog Devices, Wilmington, MA
Ideal Blocking Diode Circuit for Photovoltaic Solar Panels - Most photovoltaic solar panels are used to charge a battery during the daytime. Nearly all panels come equipped with a blocking diode. The diode prevents DC current from flowing backwards from the battery bank into the panel at night. The usual blocking. . . Circuit by Dave Johnson P.E.-March, 2011
Ideal Diode Function - Most photovoltaic solar panels are used to charge a battery during the daytime. Nearly all panels come equipped with a blocking diode. The diode prevents DC current from flowing backwards from the battery bank into the panel at night. The usual blocking . . . Hobby Circuit designed by David A. Johnson P.E.-January, 2008
Improved Active Rectification - 02/06/03 EDN Design Ideas: Build an adjustable high-frequency notch filter - Rectifiers convert ac signals to dc. You can combine a diode and a load resistor to create a half-wave rectifier, provided that the amplitude of the ac source is much larger than the Design by Reza Moghimi, Analog Devices Inc, San Jose, CA
Instrument panel lamp dimmer control - Motorola - This circuit uses an MC3392 low side protected switch and an MC1455 timing circuit to form an automotive instrumentation panel lamp dimmer control. The brightness of incandescent lamps can be varied by Pulse Width Modulating the input of the MC3392. The modulating signal can be obtained directly from the MC1455 timer (or a microprocessor). The MC1455 is configured as a free-running clock having a frequency and duty cycle control. __ Contact IQ Technologies
Interference Free Switch Mode Pre-Regulator - I created this circuit to fix an overheating problem with a small Chinese-made stereo set. This simple solution to a perplexing problem worked so well that I felt the need to share it. This circuit can be used for other applications as well. __ Designed by Andrew R. Morris
Inverter 12 volt unit Mos-Fet Design - A Very Reliable, Efficient and Practical Design. Do Not ask how to Build this for Power ratings over 1000 watts, That is NOT Practical. __ Designed by G.L. Chemelec
Isolated Miniature AC/DC Power Supply - This circuit uses a novel approach to produce a fully isolated and regulated 5 volts @30ma from the 120vac power line. it uses two tiny SCRs that alternately discharge two capacitors through a miniature high frequency transformer . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2000 |
