Driver Circuits, page 10a, free electronic circuit links

Driver Circuits, Page 10a
Drivers: #'s A B - C D - G H - K L - N O - R S T U-Z
Last Updated on: Friday, March 23, 2012 04:35 PM

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

Wall Clock Governor Driver - These were common before the advent of quartz controlled stepping motor clocks. Here is a reverse engineered diagram of this very typical circuit…. [Reverse engineered schematic by Stepan Novotill]

White LED drive from 1.5V - How do you get 3.5 volts to drive a white LED when you only have a 1.5v battery?.....(schematic / circuit added 6/07)

White LED driver backlights LCD and keypad - 13-Nov-03 Issue of EDN Designers widely use white LEDs to backlight color LCDs and keypads in handheld devices, such as cell phones, MP3 players, GPS navigators, and PDAs. Their spectrum and brightness represent near-ideal light sources. One possible configuration for a phone or a phone/PDA combination is to have a group of three LEDs to light the display and six LEDs for the keypad..... [Design Idea by Fabien Franc, Catalyst Semiconductor, Sunnyvale, CA]

White LED Driver in Tiny SC70 Package Achieves 84% Efficiency - Linear Technology Magazine Design Ideas August 2002 (app note added 2/05)

White LED Driver in Tiny SC70 Package Delivers High Efficiency & Uniform LED Brightness - DN315 Design Notes (Linear Technology) (app note added 6/06)

White LED driver operates down to 1.2V supply voltage - 3-Sep-07 Issue of EDNThis circuit beats commercially available LED drivers, which bottom out at 2.5V input voltage, by operating at voltages as low as 1V..... [Design Idea by Dave Wuchinich, Modal Mechanics, Yonkers, NY]

White LED driver provides 64 step logarithmic dimming - 10-Jun-04 Issue of EDN The circuit of Figure 1 is designed for portable-power applications that require white LEDs with adjustable, logarithmic dimming levels. The circuit drives as many as four white LEDs from a 3.3V source and adjusts the total LED current from 1 to 106 mA in 64 steps of 1 dB each. The driver is a charge pump that mirrors the current ISET (sourced from IC3's SET terminal] to produce a current o..... [Design Idea by William Hadden, Maxim Integrated Products, Sunnyvale, CA]

White LED driver touts high efficiency - 12-Jun-03 Issue of EDN White LEDs, the most recent addition to the LCD backlight, find common use in providing backlight for color LCDs. Thanks to their size and white-light output, they appear in small, portable devices with color displays, such as PDAs and cellular phones. Like other LEDs, a white LED needs a constant-current source—typically, on the order of 15 to 20 mA..... [Design Idea by Dimitry Goder, Sipex Corp, San Jose, CA]

White Light LED Driver with Gradual Dimming - TI Application Note (added 6/06)

Wide Input Range 1a LED Driver Powers High Brightness LEDs with Automotive & 12 VAC Supplies - DN1012 Design Notes (Linear Technology) (app note added 10/06)

Wideband Low Noise Amplifier Drives 50 Ohm Loads - 10/23/97 EDN-Design Ideas..... The circuit in Figure 1 is a wideband, high-gain amplifier with two useful features not often found in combination The input-referred noise is 2.6 nV/(square root Hz], yet it can deliver 27 dBm into a double-terminated 50 ohm load or 30 dBm into a single-terminated load. The circuit uses two monolithic op amps..... [Design Idea by Mitchell Lee, Linear Technology Corp, Milpitas, CA]

ZXSC100 Single cell DC-DC converter LED driving applications - Zetec Semiconductors Applications Notes ZXSC100 single cell DC-DC converter offers an ideal solution to driving white LEDs in flashlights, enabling operation from a single NiCd or NiMH cell. (app note added 10/06)

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