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Index 22

Low Voltage H-bridge circuits

Published:2013/7/5 1:30:00 Author:muriel | Keyword: Low Voltage, H-bridge circuits

Low Voltage H-bridge circuits
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H-BRIDGE WITH PWM Circuit

Published:2013/7/3 3:04:00 Author:muriel | Keyword: H-BRIDGE, PWM Circuit

H-BRIDGE WITH PWM Circuit
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H-Bridges: Theory and Practice

Published:2013/7/3 3:03:00 Author:muriel | Keyword: H-Bridges

H-Bridges: Theory and Practice
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Darlington power transistors

Published:2013/7/3 3:00:00 Author:muriel | Keyword: Darlington power transistors

Darlington power transistors
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H-Bridge

Published:2013/7/3 3:00:00 Author:muriel | Keyword: H-Bridge

H-Bridge
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H-BRIDGE Circuits

Published:2013/7/3 2:59:00 Author:muriel | Keyword: H-BRIDGE Circuit

H-BRIDGE Circuits
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Bruce Robinson's "Full-featured" Dual H-bridge

Published:2013/7/3 2:58:00 Author:muriel | Keyword: "Full-featured" Dual H-bridge

Bruce Robinson's Full-featured Dual H-bridge
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Steve Bolt's 4-transistor H-bridge

Published:2013/7/3 2:58:00 Author:muriel | Keyword: 4-transistor H-bridge

Steve Bolt's 4-transistor H-bridge
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Dual Channel Servo Pulse to H-Bridge Interface

Published:2013/7/3 2:57:00 Author:muriel | Keyword: Dual Channel, Servo Pulse , H-Bridge Interface

Dual Channel Servo Pulse to H-Bridge Interface
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Low Voltage H-bridge circuit

Published:2013/7/3 2:56:00 Author:muriel | Keyword: Low Voltage , H-bridge

Low Voltage H-bridge circuit
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H-Bridge Circuit

Published:2013/7/3 2:51:00 Author:muriel | Keyword: H-Bridge Circuit

H-Bridge Circuit
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better MOSFET H Bridge Schematic

Published:2013/7/3 2:50:00 Author:muriel | Keyword: better MOSFET , H Bridge Schematic

better MOSFET H Bridge Schematic
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Decreasing Frequency Bicore

Published:2013/7/3 2:46:00 Author:muriel | Keyword: Decreasing Frequency Bicore

Decreasing Frequency Bicore
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PC Board Layout and Parts Placement

Published:2013/7/3 2:42:00 Author:muriel | Keyword: PC Board Layout, Parts Placement

PC Board Layout and Parts Placement
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Backup circuit (chirper)

Published:2013/7/3 2:38:00 Author:muriel | Keyword: Backup circuit (chirper)

Backup circuit (chirper)
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Sonic Output Indicator 2

Published:2013/7/3 2:38:00 Author:muriel | Keyword: Sonic Output Indicator

Sonic Output Indicator 2
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Sonic Output Indicator

Published:2013/7/3 2:37:00 Author:muriel | Keyword: Sonic Output Indicator

Sonic Output Indicator
have been having fun linking a hexcore to Wilf's BEAM sound effects circuit--the two influence each other and make a most interesting mix of sounds. That got me interested in having sounds as output indicators, where we customarily use LEDs. I'm not entirely happy with it, as it runs at 80 mA even when it's quiet (the 6-Nv ladder [some people call this a 'spinal cord'?] uses 34 mA by itself) and it makes some pretty raspy square-wave type beeps, but it DOES work. I am always happy when I design even more-or-less works! 8^D Don't ask me *how* it works, I'm not there yet. I did discover that the diodes (1N418 type) are needed to keep the sound oscillator from resetting the process in the spinal cord. I also found that I couldn't use the last Nv in the ladder to hook to a sound or it sent the ladder into a frenzy, don't know why though. You can tell where I'm headed--a noisy bot that chirps and chortles and whistles and snorts as it goes about its life. What I need is something of the cheerful whistles and warbles of Wilf's sound effects that will turn on in response to a Nv output, and remain quiet otherwise, without eating current. (I don't ask for much!) (View)

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Charge pump circuits

Published:2013/7/3 2:36:00 Author:muriel | Keyword: Charge pump circuits

Charge pump circuits
A charge pump uses arrays of capacitors to increase voltage in a circuit. In this way, you can drive higher voltage loads from logic voltages of 3 - 5 volts. Wilf has posted a number of interesting charge pump designs on the (formerly eGroups, now ) Yahoo BEAM group list: This is a simple, multi-stage design -- all you need is a bicore, 3 volts, and a bunch of 10 uF capacitors... (View)