Low voltage dimmer with no load protection

摘要: A low voltage dimmer is shown with the dimming function being on a primary side of transformer. Live feeds through triac to transformer gate for controlled by microprocessor. To prevent burnout if secondary load open, zero crossing incoming signal determined If time constant between live and charging capacitor resistance provided exceeds w predetermined period, microprocessor will be inhibited from generating pulse fire triac. When has been opened, can re-established, i.e. light bulb replaced. Power used provide triggering Also may triggered remote locations.