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AP1506  150KHz, 3A PWM BUCK DC/DC CONVERTER Description
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... curve can be used for a quick check for the approximate junction temperature for various conditions, but be aware that there are many factors that can affect the junction temperature. When load currents higher than 3A are used, double sided or multi-layer PC boards with large copper areas and/or air ...
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... negative half cycles. This is a common problem for the triacs; some have tendency to easily fire on the positive half cycle and some have the reverse tendency. • This because IGT for a triac for the forward main terminal polarity (See figure -3) may be quite a bit different from IGT for the reverse ...
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Current source



A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.A current source is the dual of a voltage source. The term constant-current 'sink' is sometimes used for sources fed from a negative voltage supply. Figure 1 shows the schematic symbol for an ideal current source, driving a resistor load. There are two types - an independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to some other voltage or current in the circuit.
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