CD4069 production sensitive electrostatic electrostatic ----- CD4069 ElectroPE

CD4069 production sensor, CD4069 ElectroPE Keywords: CD4069, electrical electrical circuit diagram Author: Zhao Gigury L, the principle of circuit principle is also made of CMOS digital integrated circuit CD4069 six non-door as the core element, as shown below. The circuit consists of three parts. (1) The inductive probe consists of two non-door on the left of the figure below. R1 is adjusted to the work point, so that the (1) foot probe has higher sensitivity (high input resistance, and strong enlargement). (1) Welding a copper heart insulation wire of 5 cm left and right, when it is close to 220V fire line, the electric field is used to induce alternating voltage, zoom in two levels, from the (4) foot output, C1 Filter produces a high level voltage on the resistor R2. Capacitor C3 has anti-interference. (2) Level detection and illumination display are composed of two non-door intermediates in Figure 1. When the sense should receive a 220V fire power field induction, and at a non-door (13) feet generate high level signals, the high level voltage of the two-stage non-door, amplification, (10) foot output is sufficient to drive the light-emitting diode VD3 Luminescence, showing 220V voltage detected. If the probe does not induce an electric field, the VD1 is closed, (13) the foot and (10) foot are low, and VD3 does not illuminate. (3) Sound alarm When the probe has a 220V induction signal, since the (3) pin is high, the diode VD2 is forced to be cut by the left two non-door and R3, R4 and C2 from the left. Vibrate. The oscillating signal is magnified by the triode VT, driving the speaker BL to send audio oscillation sound, reminding people to note that 220V voltage has been detected at the probe. Be 2. Component selection and installation commissioning Press the table to select the component. The printed circuit board is shown in the right. As long as the circuit components are installed, the wiring is correct, the circuit can work properly. The R1 resistance of the circuit input can be adjusted within 2 to 10 mΩ in order to achieve ideal sensitivity. If the non-gate of the two inputs, the series work gain is too high to generate "self-excite" (when there is no signal, the speaker is also called), and the electric resistance of only one 51 ~ 100 kΩ is connected in parallel at both ends of the capacitor C3. Code number name Model specifications unit quantity Remark CD4069 Digital integrated circuit CMOS, CD4069 Six non-door Only 1 Be VT NPN triode 9014 Only Be Be VD1, VD2 Silicon diode 1N4148 Only 2 1N4002 can be generated VD3 led φ5, red Only 1 Be C1 Porcelain capacitor CCX1, 0.01μF Only 1 Be C2, C3 Porcelain capacitor CCX1, 1000 PF Only 2 Be R1 Metal film resistance RJX-0.125 W-4.7 MΩ Only 1 Replaceable R2 Metal film resistance RJX-0.125 W-2.7 MΩ Only 1 Be R3 Metal film resistance RJX-0.125 W-51 KΩ Only 1 Be R4 Metal film resistance RJX-0.125 W-200 KΩ Only 1 Be R5 Metal film resistance RJX-0.125 W-1.5 kΩ Only 1 Be SA switch Small button switch Only 1 Be BL speaker 8 Ω, 0.25 w Only 1