query: 4 channel optocoupler
positive_passages.docid: 20820
positive_passages.text: What's the difference of placing multiple resistors and one resistor for limiting the current of LEDs?
negative_passages.docid: 151478
negative_passages.text: Calculating resistor for LEDs with different Forward Voltages in series
negative_passages.docid: 70745
negative_passages.text: Connecting two DC wallwarts in series - to produce dual DC supply
negative_passages.docid: 123900
negative_passages.text: How do I design a circuit for a bi-color led to display power?
negative_passages.docid: 158346
negative_passages.text: Adding 3 way switches
negative_passages.docid: 58806
negative_passages.text: Design review - RGB LED color mixer using PWM
negative_passages.docid: 13587
negative_passages.text: 20A & 30A dual feed into subpanel
negative_passages.docid: 134203
negative_passages.text: How do I wire two lights with a switch?
negative_passages.docid: 98091
negative_passages.text: Can an LC oscillator be used to generate visible light?
negative_passages.docid: 102513
negative_passages.text: BJT Astable Multivibrator
negative_passages.docid: 137362
negative_passages.text: Variable wavelength IR Diode?
negative_passages.docid: 122522
negative_passages.text: Interfacing switch and LED
negative_passages.docid: 59891
negative_passages.text: Power LED bed lamp from mains
negative_passages.docid: 11193
negative_passages.text: How many switches can be stacked/interconnected?
negative_passages.docid: 88409
negative_passages.text: Op-Amp as an error detector
negative_passages.docid: 145553
negative_passages.text: 4-20mA to 0-3V3 Converter
negative_passages.docid: 120655
negative_passages.text: Expected number of light bulbs on