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One LED flasher (2SA1015)

2014-12-06 19:13  
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This article describes the One LED flasher (2SA1015). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy these components: 2SA1015.

This circuit is a simple circuit using only capacitor C1.Resistors R1 frequency generator to Q1.Which acts like a switch.then used Q2 to be the current increase.
Operation of this circuit from capacitor C1 through R2 and LED1. Until the voltage drop at C1 increases,Q1 to the value that work.
As a result, the current Q1. The current through pin E and C stand to cooperate with the Q2 Q2 B’s conduct as a result, a current flows through LED1.While C1 is discharged through R1 to a period of time.When C1 discharge out there would be no pressure to bias the leg B of Q1. The Q1 to stop working, Q2 will stop working.LED1 will turn off and capacitor C1 will start again.The Q1, Q2 LED1 light work, where work is of such and so on.
One led flasher with 2SC1815

This circuit systematically main work from Oscillator Circuit. It is use UJT. The Q1 will give the period of time of pulse for trigger. The work of SCR for drive LED. The circuit will pull current 2 mA from just Battery 9V. When the schedule is Flasher keep 12 time per second The SCR use at have 6A 50V. Idea circuit this sizes may advantage with friends , please sir.

This circuit uses op-amps to obtain a triangle wave. The triangle wave causes the Led to slowly get brighter and then slowly get dimmer until it isn’t producing any light. It then gets slowly brighter again. With the components shown each cycle takes about 4 seconds. The capacitor and the 4.7M resistor are the timing components. The circuit works best when a high brightness Led is used.

Fading LED by LM358

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