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14.2mm wide Creepage & clearance optocouplers for high-voltage applications - EDN Design Ideas: 08/05/2014 Not any optocoupler will do for applications requiring extra-high-voltage isolation Design by Avago Tech Note
175Khz Inductive Pulse Receiver - This circuit is discussed in more detail in the Experimenters Journal. The receiver’s six inch diameter coil detects the ring signal from the above transmitter and use a single NPN transistor to provided enough amplification for the signal to be easily viewed on an oscilloscope. . . Circuit by Dave Johnson P.E.-June, 2000
1Khz to Over 70Mhz Light Receiver - This circuit uses one tiny C-MOS inverter IC to form a modulated light receiver with a very fast response. It is designed around a PIN photo diode that is packaged for use with plastic optical fibers. It can be used as an optical fiber receiver. By using the open end of the optical fiber it can "sniff" out any modulated light signals . . . Hobby Circuit designed by David Johnson P.E.-June, 2000
1Khz to Over 70Mhz Light Receiver - This circuit uses one tiny C-MOS inverter IC to form a modulated light receiver with a very fast response. It is designed around a PIN photo diode that is packaged for use with plastic optical fibers. It can be used as an optical fiber receiver. By using the open end of the optical fiber it can "sniff" out any modulated light signals . . . Hobby Circuit designed by Dave Johnson P.E.-June, 2000
1us LED Pulse Driver + Voltage to Frequency Converter - This circuit receives the signal from the above amplifier and launches powerful 1uS infrared light pulses from a low cost LED that are frequency modulated by the audio information. The 10KHz center frequency of the pulse stream is low enough so a standard . . . Hobby Circuit designed by David A. Johnson P.E.-March, 1999
2Mhz Broad Band Optical Fiber Receiver - If you need more sensitivity than the above circuit this circuit provides about ten times more gain. It too is designed around an inexpensive plastic optical fiber detector . . . Hobby Circuit designed by David A. Johnson P.E.-June, 2000
2Mhz Broad Band Optical Fiber Receiver - If you need more sensitivity than the above circuit this circuit provides about ten times more gain. It too is designed around an inexpensive plastic optical fiber detector . . . Hobby Circuit designed by Dave Johnson P.E.-June, 2000
2uS Light Pulse Receiver - Although the LF357 is an obsolete part, this circuit gives you an idea how to build a sensitive modulated light detector with high ambient light immunity. The first section uses a 100mH inductor as an efficient photodiode current to voltage conversion circuit. . . Circuit by David A. Johnson P.E.-June, 2002
30Khz Light Receiver Amp - This circuit uses NPN darlington transistor to amplify the signal produced from short light flashes, as detected by a PIN photo diode. The circuit draws only about 330uA from a 6v battery. . . Circuit by Dave Johnson P.E.-March, 2002
40Khz Light Receiver Amp - This circuit is similar to 30KHZ LIGHT RECEIVER AMP but provides more gain and operates up to 40KHz. However it draws more power supply current.. . . Circuit by David Johnson P.E.-March, 2002
50Mhz Broad Band Optical Fiber Receiver Version A - If the above circuit it still too slow, you can try this circuit. What it lacks in sensitivity it makes up for in speed. The circuit attaches a plastic fiber optic PIN photodiode assembly to a small box containing a small 3v battery and a standard. . . Circuit by Dave Johnson P.E.-June, 2000
5MBd Digital optocouplers targeting low power/low supply voltage applications - EDN Design Ideas: 01/22/2015 Digital optocouplers provide high voltage insulation and noise rejection for data transmission, with very low power usage Design by Avago Tech Note
5Mhz Broad Band Optical Fiber Receiver - This circuit is a simple broad band light detector that uses a very inexpensive IC and a PIN photodiode that is packaged for use with plastic optical fibers. It has a bandwidth from 1KHz to over 5MHz. It is great for experimenting with various modulated. . . Circuit by David A. Johnson P.E.-June, 2000
5Mhz Broad Band Optical Fiber Receiver - This circuit is a simple broad band light detector that uses a very inexpensive IC and a PIN photodiode that is packaged for use with plastic optical fibers. It has a bandwidth from 1KHz to over 5MHz. It is great for experimenting with various modulated. . . Circuit by Dave Johnson P.E.-June, 2000
ADN2841 Optical Evaluation Kit - AN-630 Analog Devices App Note This application note describesADN2841 laser diode driver Rev. E1 evaluation kit. The evaluation kit is a demonstration board that provides optical evaluation ofADN2841. This document describes how to configureboard in order to operatepart optically.
ADN2847 AC-Coupled Optical Evaluation Kit - AN-638 Analog Devices App Note This application note describes32-lead ADN2847 laser diode driver Rev. A1 evaluation kit. The evaluation kit is a demonstration board that provides ac -coupled opti cal evaluation ofADN2847. This document describes how to configureboard to operate se parts optically.
ADN2848 AC-Coupled Optical Evaluation Kit - AN-637 Analog Devices App Note This application note describes32-lead ADN2848 laser diode driver Rev. A1 evaluation kit. The evaluation kit is a demonstration board that provides ac-coupled optical evaluation ofADN2848. This document describes how to configureboard in order to operate this part optically.
AN-263: Resolver to Digital Conversion; Simple Alternative to Optical Shaft Encoders - AN-263 Analog Devices App Note
AN-658: Optical Channel Identification on the ADN284x Laser Drivers Part I - AN-658 Analog Devices App Note
Avago Tech Note: 14.2mm wide Creepage & clearance optocouplers for high-voltage applications - EDN Design Ideas: 08/05/2014 Not any optocoupler will do for applications requiring extra-high-voltage isolation Design by Avago Tech Note
Avago Tech Note: 5MBd Digital optocouplers targeting low power/low supply voltage applications - EDN Design Ideas: 01/22/2015 Digital optocouplers provide high voltage insulation and noise rejection for data transmission, with very low power usage Design by Avago Tech Note
Avago Tech Note: Driving & protecting inverter IGBTs - EDN Design Ideas: 06/12/2014 A special purpose optocoupler can solve your IGBT gate-drive and fault-feedback needs Design
Avago Tech Note: Fast analog isolation with linear optocouplers - EDN Design Ideas: 06/12/2014 Implement isolated analog signals and current loops with linear optocouplers Design
Avago Tech Note: High-speed optocouplers enable industrial networks - EDN Design Ideas: 06/13/2014 Communicate at up to 25Mb/s over (e. g.) PROFIBUS Design by Avago Tech Note
Avago Tech Note: Optocouplers in intrinsic safety applications - EDN Design Ideas: 02/16/2015 Intrinsic safety applications defined in IEC 60079-11 require careful selection of isolation components Design by Avago Tech Note
Avago Tech Note: Smart gate-drive optocoupler with integrated flyback controller - EDN Design Ideas: 03/13/2015 A smart gate-drive optocoupler for FETs & IGBTs is ideal for distributed power supplies, power inverters, motor drives, and more Design by Avago Tech Note
Broad Band 2Mhz Optical Fiber Receiver - If you need more sensitivity than the above circuit this circuit provides about ten times more gain. It too is designed around an inexpensive plastic optical fiber detector. . . Circuit by David A. Johnson P.E.-June, 2000
Broad Band 50Mhz Optical Fiber Receiver Version A - If the above circuit it still too slow, you can try this circuit. What it lacks in sensitivity it makes up for in speed. The circuit attaches a plastic fiber optic PIN photodiode assembly to a small box containing a small 3v battery and a standard . . . Hobby Circuit designed by David Johnson P.E.-June, 2000
Build an Optical Theremin - Make music hands free! __ Contact Jameco Electronics
Circuit controls intensity of reflex optical sights - 02/21/02 EDN Design Ideas: A popular category of aiming/pointing aids is the reflex, or "red-dot," sight. This system finds use in such diverse applications as astronomy, archery, and shooting. In the reflex sight, light from an internal source-typically a high-intensity red LED-reflects from a curved, transparent optical (reflex] element through which you view the target Design by Stephen Woodward, University of North Carolina, Chapel Hill, NC
Circuit Measures Optocoupler's Response Time - 09/08/11 EDN Design Ideas: Measure the response speed of optocouplers in order to select matching devices. You can use the circuit in this Design Idea to measure the attack and release times of photoresistor-type optocouplers (Figure 1). Such devices often find use in audio compressors or volume-control circuits. The design uses an oscillating Schmitt trigger with the optocoupler DUT (device under test) in the feedback loop. The photoresistor and resistor R1 form a voltage divider that controls the input of the Schmitt trigger. Design by Peter Demchenko, Vilnius, Lithuania
Control Intensity of Reflex Optical Sights - 02/21/02 EDN Design Ideas: A popular category of aiming/pointing aids is the reflex, or "red-dot, " sight. This system finds use in such diverse applications as astronomy, archery, and shooting. In the reflex sight, light from an internal source-typically a Design by Stephen Woodward, University of North Carolina, Chapel Hill, NC
Current Sources for Fiber Optic Lasers - AN90 A large group of fiber optic lasers are powered by DC current. Laser drive is supplied by a current source with modulation added to the signal. The current source, although conceptually simple, constitutes an extraordinarily tricky design problem. There are a number of practical requirements for a fiber optic current source and failure to consider them can cause laser and/or optical component destruction. This application note describes ten laser current source circuits with a range of capabilities. High and low current types are presented, ___ Linear Technology/Analog Devices
Demodulator Makes Low Cost Optical Tracker - 06/18/98 EDN Design Ideas: (Several circuits here, scroll to find this one.) Demodulator makes low-cost optical trackerSteven Sarns, Kesta Technology Inc, Wheat Ridge, CO A project required building a synchronous-demodulator circuit to track a line drawn on paper. The beauty of the synchronous-modulator/demodulator approach is its inherent noise rejection. The method rejects nearly all out-of-band noise, whether from internal drift or external illumination. Design by Steven Sarns, Kesta Technology Inc, Wheat Ridge, CO
Design a Visible Optical Link for RS-232C Communications - 01/09/03 EDN Design Ideas: Embedded processor directly drives LCD - The design in Figure 1 is a visible optical link for those who need to see the transmitted data. An isolation figure ofthan 5000V is a bonus. Tests of the system used the COM input of a data-acquisition system, as well as a standard PC's COM port. The MC1489 converts the RS-232C data to TTL signals Design by Shyam Tiwari, Sensors Technology Ltd, Gwalior, India |
