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Optical Column Pulse Tester Circuit

5/25/2023 11:14:33 PM

Related Component PDF Download:LM7812SM180The light column pulse meter circuit is shown in the figure. The whole device consists of heart rate sensor, signal amplification, single hidden pulse shaping, amplitude fixing, light column driving, display and power supply. IC1 is a heart rate se

Toilet Gated Switching Circuit (1)

6/10/2023 11:21:07 AM

Related Component PDF Download:CD4027LM7812NE555The bathroom-controlled switch circuit described in this example can be used to control the lighting and exhaust fan in the bathroom with six magnetically controlled switches. The six-control switch circuit in the bathroom consists of a power

Automatic lamp circuit for microwave radar detection (2) (RD9418)

6/13/2023 12:05:37 AM

Related Component PDF Download:RD94819013LM7812The automatic light circuit made with RD9481 microwave radar detection module is shown in the figure. As soon as someone enters its valid range, the light will light up. When someone goes away, the light will go out after a set time delay. In

Automatic lamp circuit for microwave radar detection (4) (TWH9250)

6/13/2023 12:25:37 AM

Related Component PDF Download:TWH9250LM7812The loop antenna is available as shown in the circuit Φ 1-3mm enameled wire bent Φ A 80mm ring is then connected to the X and Y ends of the module.

Chicken House Automatic Light Supplementary Circuit

6/13/2023 2:35:37 PM

Related Component PDF Download:LM78123DU339013NE555Providing enough light to hens can improve the egg production rate. Because of the shorter sunshine time in winter, chicken households generally use artificial lighting to supplement their henhouse. By using the circuit shown in the figure