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Triggering Circuits
Last Updated on:
Sunday, May 19, 2013 04:50 AM |
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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CMOS Gate Implements Reverse Phase Control - 05/21/98 EDN-Design
Ideas....The circuit in Figure 1 implements a "reverse" phase control, using
only a single CMOS 4001 quad NOR gate. The circuit is known as a reverse
phase control because, unlike with common triac or SCR controls, conduction
begins at the zero crossing of the ac sine wave. Timing of the turn-off
point....File has seeveral circuits, scroll down.... [Design Idea by
JC Johnson, Lithonia Lighting, Decatur, GA] |
| DSO-triggering scheme is cheap and
efficient - 05/07/98 EDN-Design Ideas....Although a logic analyzer is
useful in troubleshooting a new design, nothing beats a digital storage
oscilloscope (DSO) for the ability to see bus levels and timing. However,
the trigger mechanisms on most DSOs are not sophisticated enough to
trigger on a specificm P bus state....NOTE Page includes several
designs, scroll to find this one.... [Design Idea by Robert Perrin, Z-World,
Davis, CA] |
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LED Flasher & TRAC Pulser work Off AC Line - 15-Jan-98 Issue of EDN A
flashing LED is an excellent visual alarm. Unfortunately, the LED is a dc device and
requires additional circuitry to operate from an ac source. Several circuits can
perform the necessary function, but the circuit in Figure 1a is the most
efficientThis File contains several Design Ideas, please scoll to this one.... [Design
Idea by Dennis Eichenberg, Parma Heights, OH] |
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Trigger Circuit for Strobes - circuits which can be used for triggering
stroboscopes from external signals (added 4/02) |
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Trigger Circuit Locks onto one Horizontal Line - 09/02/96 EDN-Design
Ideas.... EDN is migrating links. This link is not verified. Search the "title"
+ "EDN" for new link. |
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Typical Strobe Light Trigger Circuit - 555 based Timing circuit which
triggers a SCR which controls the trigger transformer (added 5/02) |
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Triggering
Circuits
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