very simple circuit to test your remote controls. it is build with only 6 easy to find components. you dont have to build a pcb for it since it uses few components that can be soldered together directly or to a universal prototype pcb.
there is a mistake in schematics thats why it is blured.the correct transistor is bc547 and not 557.
the correct schematics is here [ Ссылка ]
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