1. B

    120V Smart Dimmer to control zero cross SSR

    Hello, I am building a control panel for a set of infrared heaters and would like to use some smart dimmers that use leading edge dimming with 120v (https://inovelli.com/collections/inovelli-white-series/products/thread-matter-white-series-smart-2-1-on-off-dimmer-switch). Because these cannot...
  2. M

    Thoughts on my Dual Channel Dimmer Schematic?

    Hey Guys, I'm interested to see what some experts think about my schematic before I get the circuit board made. I have previously tested the photo-voltaic MOSFET drivers and the low-power ZCD circuit. They operate well, and give me really good dimming waveforms. I've now added power...
  3. S

    LED Dimmer IC Recommendation?

    Hey everyone, I'm working on making a custom headlamp for myself and want to have dimming functionality without using a microcontroller. I came across the IC FM2819 (data sheet attached) which has the characteristics I'm looking for, but it isn't available for purchase on DigiKey, Mouser, or the...
  4. Bassem Faris

    How to Design a dimmer that don't depend on the load's resistance

    Hi all I have an angle grinder which have Maximum power of 950 watt And my country provide 220 volt as voltage source But it have one speed and i want to make a dimmer to control its speed. I used this circuit but it provides at least 130 VAC It make the machine rotate so fast How can i make...
  5. J

    Dimmer Circuit Simulation Problem

    Hi I am trying to make a dimmer circuit with proteus. But it is not working according to our calculations. I am very new both in proteus and also learning about OP-AMPs. So I am not understanding what's wrong with the schematics. Both the current and voltage is showing zero. Here is the...
  6. L

    TRIAC (BTA41-600) and optocoupler (MOC3041) not working with load

    Hey guys, it's my first post here, so I'm sorry if I'm doing it in the wrong place and I really hope you can help me! I'm developing a dimmer with ESP8266 and I'm having trouble with the TRIAC circuit. I have a zero cross detector developed and it works fine, but when I try to send the signal...
  7. NAND4011

    Potentiometer circuit to DC-Dimmer circuit: 3 wire to 4 wire connection?

    Looking for a plausible solution to the following problem: Background: 1. Currently - simple potentiometer (linear, 100k Ohm) control that controls an AC motor 2. Motor has a dedicated DC control circuit embedded with the following possible control connection points a). "Low Voltage +10V...
  8. IvarsOzolsDB

    300W AC light dimmer mod to 500W

    Bought Stairville PAR56 Active 300W and got a bit dissapointed in light output. So I got wondering maybe there is some mod I could do to put 500W 230V PAR56 bulb in it (originally 300W 230V PAR56) and not fry dimmer circuits. I traced schematic (look in attachments) in high voltage part, as it...
  9. A

    Input supply jerk of triac when power turned on

    Hi, I implemented the circuit from this video. After implementing, I realized a mistake, whenever the main supply switch turns on, there is an initial jerk (also visible in the video, the link starts video video from that point of issue) then triac operates as per gate voltage level on gate. Is...
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