Search Results for: led basic ckt for ac
Light Emitting Diode or LED is suitable for ON/OFF indicator since it has high durability, almost free of maintenance. The most common usage is in low voltage application since the operating voltage is low DC. Taking the benefit of its high durability of LED in high AC voltage from line voltage can be done using …
Read MoreDC to AC inverter is used to convert DC voltage source to an AC voltage source. DC AC inverter circuit works by switching the DC voltage source to make an alternating current that flow to a transformer. Here is an example of dc ac inverter schematic: This power inverter could generate 120 Watts …
Read MoreApplying the filtered and rectified AC input to a high-input-voltage linear regulator is the simplest way to produce low current level from an AC source. However, it will causes the power dissipation in the regulator. The power dissipation can be reduced by using a switching regulator but it will increases the cost if we use …
Read MoreThis is JFET AC Coupled Integrator circuit. This circuit is used to achieve very high voltage gain. To achieve very high voltage gain this circuit uses “µ-amp” technique. Here is the circuit : C1 is used as a capacitance multiplier or Miller integrator. It will allow the circuit to handle very long …
Read MoreBelow is the simplest circuit you can get. We can use any NPN. Connect the 220 ohm resistor, LED and transistor as shown in the figure below. Touch the top point with two fingers of one hand and the lower point with fingers of the other hand nad squeeze. When you squeeze harder, …
Read MoreThis is a discrete high current switch mode LED driver circuit. The basics of this circuit is a buck-converter principle. The efficiency of this circuit is 80 to 90 %. This circuit can be applied on automotive lighting applications. The advantages of this circuit are low component and low cost. Here is the circuit: …
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