Was hoping to get some help on a circuit design. Thanks!
Application: An electronic panel used for fireworks. Electric matches are connected. 20mA@1.2v is then passed through them (led is in series) for continuity. Good continuity lights the LED at the panel. To fire the match, we touch a probe to to a small protruding pin. Contact between the probe and pin bypasses the led and sends 24vdc through the match and fires it. In a perfect world, the match head would open the continuity circuit and the led would go out. Unfortunately, about 20% of them stay closed after being fired.
Circuit: Would anyone know of a simple latch/flip flop that could replace our current continuity circuit? It would have to power up in the ON condition and immediately send 20-25mA@1.2-1.5v through the connected matches and light up a closed circuit. The momentary application of 24vdc (probe to pin) would then change the state to OFF, regardless of whether the match is opened or closed. A reset switch could be added to the panel if needed.
Any help would be greatly appreciated. Thanks, everyone.
Application: An electronic panel used for fireworks. Electric matches are connected. 20mA@1.2v is then passed through them (led is in series) for continuity. Good continuity lights the LED at the panel. To fire the match, we touch a probe to to a small protruding pin. Contact between the probe and pin bypasses the led and sends 24vdc through the match and fires it. In a perfect world, the match head would open the continuity circuit and the led would go out. Unfortunately, about 20% of them stay closed after being fired.
Circuit: Would anyone know of a simple latch/flip flop that could replace our current continuity circuit? It would have to power up in the ON condition and immediately send 20-25mA@1.2-1.5v through the connected matches and light up a closed circuit. The momentary application of 24vdc (probe to pin) would then change the state to OFF, regardless of whether the match is opened or closed. A reset switch could be added to the panel if needed.
Any help would be greatly appreciated. Thanks, everyone.