Electronic switch-regulator of the lamp. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Lighting
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I propose a schemeoriginal"touch switch of the lamp. Its originality lies in the fact that, in addition to turning it on and off, it allows you to adjust the brightness of the lamp and has a "memory." And all this on one domestic microcircuit !!! -or automatic, then this is what you need!
This device is produced by several enterprises, with minor adjustments in the circuit diagram. But in amateur radio literature, it is not covered enough. But in vain! The device deserves more attention.
The algorithm of work is simple: A short touch of the finger on the sensor E1 turns on the lamp. Repeat - turns off. But if the finger is held on the E1 sensor for more than 0,5 seconds, then the brightness of the lamp will slowly increase (decrease). By removing your finger from the E1 sensor, the device "remembers" the selected brightness state. And with subsequent switching on and off, the lamp burns with the set brightness.
To change the brightness in one direction or another, you just need to touch the E1 sensor and hold your finger until the desired brightness is set. If tapping increases the brightness and you need to decrease it, remove your finger and tap again. And vice versa - if you need to reduce.
For three years now, two of these devices have been working at home instead of ordinary switches. Instead of a touch plate, a thin copper wire is stretched along the wall (above the sofa). And if I "break" to get up to turn off the light, then I just touch the stretched wire with my hand or even my foot and that's it. In the morning - a similar process. Well, very convenient!
(click to enlarge)
Details: V1- KT315B, VS1 - KU602B, D1 - KS215Zh, D2 - KD103B, R1- 200 (0,5W), R2 - 1,3K (1W), R3 - 10K (0,25W), R4 - 100 (0,25W ), R5 - 1,2M (0,5W), R6 - 4,7M (0,5W), R7 - 510K (0,25W), R8 -4,7M (0,25W), R9 - 4,7M ( 0,25W), C1 - 0,1(400V), C2 -0,15(400V), C3 - 50mk (electrolyte 25V), C4 -470(63V), C5 - 0,047(63V), C6 - 0,047( 63V), D1 - KS215Zh, FU1 -2A. Inductor L1 - 150 turns PEL-0,4 on a ferrite rod 400-600NN. (any interference)
I recommend replacing the triac VS1-KU602B with TS 112-10-7 or similar. And also turn on the zener diode D6 - KS3A in parallel with the resistor R175 (as shown in the diagram).
By selecting the resistor R6, select the desired sensitivity. Its resistance should be within 4,7M ... 1,2M. Any metal plate with sizes from 3 to 500 sq./cm can serve as a sensor.
To do this, remove the elements R8, R9, D3, E1. The resistance R6 should be 100K. And between pins 5 and 3 of the microcircuit, enter the contacts of the switch or button.
It should be noted that no additional settings are required!
Author: Zeshkov Yu., Pervouralsk, Sverdlovsk Region; Publication: N. Bolshakov, rf.atnn.ru
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