Four Channel On Off Control Circuit
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We are a noted Manufacturer and Supplier of Four Channel On/Off Control Circuit in India. This four-channel control uses only one D type latch IC1, and some associated circuitry to control four different gadgets. To control more devices, identical circuits, in multiples, can be used. IC1 consists of eight latches, out of which four are used here. The circuit incorporates the following features : Individual ‘on/off’ control for all channels. Emergency ‘off’ control for all channels. Immediate ‘on’ control for all channels LED indication for ‘on’ channels Optional push-to-on buttons or tectile switches. About the Circuit : When one presses the ‘on’ switch (S1) of channel-1, a logic low is applied to data input D0 (pin3). The same level appears on the data output Q0 (pin2). Because latch enable pin LE (pin11, active high) is connected to +5V, and the output enable OE (pin1, active low) is pulled down using resistor R9. At the same time, Q0 output is fed back to D0 input, which thus keeps the common junction of D0 and Q0 at low level, even after releasing ‘S1’. This low level is applied to the base of transistor T1 through diode D9 to turn it on, and relay RL1 activated. LED D13 glows indicate that channel-1 is ‘on’. The other channels can also be switched on, as desired, in a similar manner. To switch of channel-1, ‘off’ switch ‘S5’ of channel-1 is pressed to apply logic high to junction of D0 and Q0. Because of the feedback from Q0 to D0 junction remains high even after releasing the switch S5. As a result, relay RL1 is deactivated and LED D13 also goes off. In the case of emergency, press the emergency off switch ‘S9’ to disable all the outputs of IC1. The outputs of IC1 are in high impedence state, all the relays gets deactivated. If all the channels are to be switched on simultaneously, a ‘low’ logic level is applied via diodes D9 through D12 to data input D0 to D3 by pressing S10 to activate all the relays. ON/OFF four channels, with ‘All ON’ and ‘All OFF’ facility
Metering Cubicle
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Access Control System
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We are engaged in offering highly efficient Access Control System. Our bio access biometric & proximity card based time and attendance system is equipped with the advanced fingerprint and time attendance recorder. The Access Control System is available with verification speed and fastest fingerprint identification. It also has intelligent fingerprint recognition technology which is first time introduced in the industry.
Ultrasonic Level Transmitter
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1 Piece(s) (MOQ)
We are offering ultrasonic level transmitter. Agecho ultrasonic sensors salient features: • agecho ultrasonic sensors are available with output options such as analog current 4-20ma,analogue voltage 0-5v,onoff signal, trigger output for multi-sensor application, pulse width ,serial ttl ,serial rs 232c. • agecho sensing range: 200mm to 1000mm … up to … 6000mm. (19.7feet) (0-200mm is dead band). • agecho accuracy is 1% of the full scale. • agecho operating voltage 12v dc, with reverse polarity protection.(24v dc optional) • agecho is very useful non-contact type of sensing or presence or counting of object. Onoff type signal is also available. • agecho is self-calibrated. Microcontroller is present in each sensor. This provides direct distancedepth reading with better calibration and communication with the controller module. • agecho is very easy to install, rugged design for use in dusty and humid conditions, suitable for outdoor as well as indoor use. • agecho very useful for non-contact distancelevel measurement. The distance of the target is measured, not just its presence, but gives directly 4-20ma, serial or pulse width data proportional to the distance of the target. • agecho operating temperature 0 to 65 degree celsius. • agecho temperature compensated measurement for better accuracy (optional). • agecho unaffected by ambient light, object color or any other optical characteristic. Works with hard materials like metal sheet, plywood, or soft materials like cloth and paper, rubber etc.
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