The bird song lantern circuit is shown in the figure below. When the lantern chain is directly connected to 220V AC, the lantern will sparkle due to the bubble jump effect. At this time, each lamp is allocated approximately 12V AC voltage.
Household Lighting Led Driver
A comprehensive series of Office lightings drivers, suitable for use in a range of household Lighting applications, including livung room Lighting, Kitchen Lighting, bathroom Lighting, Entertainment Lighting, etc. We have skilled engineers to answer all your questions and enquiries and provide all-round solutions basis on your project(s) and provide technical supporting.
Specifically for household light, As long as the home for the panel lights, lamps and the like, indoor waterproof LED driver.Europe and the United States with the earlier, energy-saving environmental awareness earlier, widely popular.Home, then the safety performance requirements are relatively high, high voltage short circuit protection.
Parameter:
Input voltage: 100-277vac / 100-240vac / 100-130vac / 180-240vac / 100-347V
FAQ: Ceiling Light Panels Drivers,Led Light Fixtures,Led Ceiling Lights Driver ShenZhen Fahold Electronic Limited , https://www.fahold.net
The line is mainly composed of two oscillators. R1, R2, C2, and transformer B and transistor BG form an inductive three-point audio oscillator, and R1, R2, C2 and transistor BG form a trainer oscillator. The two oscillation signals are superimposed on the emitter junction of the transistor, because the two oscillation frequencies are different. It is the gap sound of the piezoelectric ceramic piece that emits a crying bird. Adjusting R1, R2 or C2, C3 can change the frequency of the two oscillating circuits, and satisfactory birding effect has been obtained. 
output voltage: 25-40vdc / 27-42vdc / 35-45vdc / 50-70vdc / 12Vdc / 24vdc
current: 100mA-8000mA.
Power factor: >0.9
Dimming:0-10V / PWM / RX / DALI.
>=50000hours, 3-5 years warranty.
certificate: UL CE FCC TUV SAA ect.
What's the benefits of Fahold Driver?
Question 1:Are you a factory or a trading company?
Answer: We are a factory.
Question 2: Payment term?
Answer: 30% TT deposit + 70% TT before shipment,50% TT deposit + 50% LC balance, Flexible payment
can be negotiated.
Question 3: What's the main business of Fahold?
Answer: Fahold focused on LED controllers and dimmers from 2010. We have 28 engineers who dedicated themselves to researching and developing LED controlling and dimming system.
Question 4: What Fahold will do if we have problems after receiving your products?
Answer: Our products have been strictly inspected before shipping. Once you receive the products you are not satisfied, please feel free to contact us in time, we will do our best to solve any of your problems with our good after-sale service.