0603 Pu Green Factory Direct
Photocoupler
One NEC602 acts as a mixer with a zero IF frequency output. U2 acts as an audio amplifier. This receiver is mainly used for SSB and CW signals. T1 and T2 are 10.7MHz IF coils for use in AM/FM transistor radios, etc., or for any similar indicator.
Broadband filter is a kind of passband filter. A filter used to separate a wide band monochromatic light from composite light. Half width of passband Δλ ≥0.01 λ 0, where λ 0 is the central wavelength of the light transmission curve of the filter. If the central wavelength of the filter is 500 nm, the half width of the passband of the filter is ≥ 5 nm.
bandpass filter
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