Author: Yang Shanxiao Feng Qinglian
In order to work according to the pre-set time control circuit and the power conditioning of some electrical appliances is made, this practical multi-function timer is produced. The characteristics of this timer: 1. Control power (5kw); 2. There are 10 sets of automatic opening and off a day; 3. The control time is accurate, and the error per day is less than 1 minute; Control power can be tierly adjustable and fixed. For example, use ordinary rice cooker to automatically achieve cooking or boiled porridge. First, the circuit makes a practical multi-function timer, from the CD-66 multi-function programmable timing module and micro switch, 555 multi-harmonic oscillating circuit, relay (J1 is electromagnetized 24V30A, J2 is solid state relay 40A3-32V), power supply circuit, etc. composition. Second, the working principle circuit is shown in the drawings. Taking the control rice cooker as an example. When the K1 closed 220V power is turned on, the red light is on, indicating that the circuit starts, and the porridge can be achieved by switch K2. When the CD-66 timing time, the foot outputs high level, the triode 9013 is turned on, the triode 8050 is also turned on, the relay JL action, the green light emitting diode is bright, the socket C21 is powered, the rice cooker starts to cook rice, One state starts working; after the switch K2 is turned on, the 555 circuit starts working, and when the JL is turned on, the yellow light emitting diode flashes, and the multi-harmonic oscillator and CD-66-66-66-66-66-functional composed of 555 . The CD-66 is controlling the porridge time, and the multi-harmonic oscillator of 555 can change the boiled porridge by adjusting RP. In this way, we can cook the delicious porridge, which is the second type of fire-adjustable working state. Be
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1.CD-66 Multi-Function Programmable Timer Module (1), Main Features: You can set 10 sets of time open, time off, and implement 1 ~ 140 timing on power supply and timing disconnection power control within one week. (2) 7 button names are as follows: 1Clock- Clock key, with "Week, Hour, min" adjustment week, hour, minute: 2Week - School weeks; 3HOUR-Calligraphy; 4min- Card key; 5Prog - "Timing" (program group) key; 6AUTO / OFF - "Manual / Auto" (Output Status Selection) button, is always connected, when it is OFF, it has been disconnected. This two states do not work when setting, only when the auto is in AUTO, automatically controls. The order of regulation is ON → Auto → Off → Auto ...; 7RST / RCL-- "Cancel / Recovery" button. Cancel and recovery can be set to a set of time. (3) Working timer: See the drawings: When the timer is used, the back side B-D, C-D solder is connected. The 8 foot output of the CD-66 timing module is high, and the relay is driven by the triode. 2 pin is the battery power saving control terminal, the highest port line voltage is lower than the chip supply voltage. When the external is powered down (ie, there is no 24V power supply in the schematic). 2 When the pin is low, the chip will automatically turn off the drive output of the (11) pin, thereby reducing the energy consumption of the power supply battery, extending the battery usage time. If you do not need to automatically save power, you must pick up 2 foots, that is, contact the positive power of the chip, you can control neon lights, advertising light boxes, street lights, and the automatic water supply, feeders, machine tools and various festivals. Automatic control of the power cabinet, distribution box. You can turn your lights in your home, turn off the lights, scheduled to turn your TV, air conditioners, so that your family enters intelligent control in advance. The chip can achieve 10 sets of settings, press the "Timing" key, in turn: 1 (on) → 2 (on) → ... 10 (on) → 10 (off) → clock → 1 (open) or 1 (ON) → (OFF) → 2 (on) ... 10 (on) → 10 (OFF) → Clock → 1 (ON) Timing group loop. It can be set to the same action every day every day, or every day actions Different, press the "Sweep" button (Week), the weekly symbol appears above the LCD. The user is selected as needed. The week cycle is as follows: 1, two, three, four, five, six, day → one → two → Three → 4 → 5 → Six → Day → One, Three, Five → 2nd, 4th, Sixth, Sixth, Japan →, Second, Three → Fourth, Five, Six → One, Second, Third, Fourth, Five → 2 , Three, four, five, six. (Mo, Tu, WE, TH, FR, SA, SU → Mo → Tu → WE → TH → Fr → SA → SU → Mo, WE, Fr → Tu, TH, SA → SA, Su → Mo, Tu, WE → Th, Fr, SA → Mo, Tu, WE, TH, FR → Mo, Tu, WE, TH, FR, SA → ...
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Timing time setting method: Press the Timing button first, set the time or set state of a group "ON), the corresponding week symbol is displayed, with" Time "and" Calibration "keys Set "Time" and "Division"; then press the "Timing" button to enable the switch into the "Off" (ie OFF) time setting state, repeat the time of the above operation setting. If you don't need 10 groups, the remaining groups are removed with the "cancel / recovery" key, so that the screen appears "-": "-". Press the "Clock" (CLOCK) button or 30 seconds without pressing any keys to recover standard time display. 2,555 Multivarity adjustable multi-harmonic oscillator (1), main performance indicator 1 operating voltage: + 5V - + 16V; 2 oscillation cycle is t = 0.69 (R10 + R11 + RP) × C6 3 Static current: ≤5mA; 4 Control port output = 12V (high level) 5 max output current: Lomex = 200mA; 6 max frequency: fmax = 300kHz 7 output rise time: t ≤150ns (2) Working principle 555 composition The duty cycle adjustable multi-harmonic oscillator is mainly to control the work of solid state relays. Load operation can be driven by solid state relays. Add a 12V voltage to the 855 foot, so that the 555 is in the working state, when the foot. 1882.2 / 3VCC, 3 foot output is low, then the solid relay is electrically, often open contacts , Solid state relay action; when 2 feet
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