Posts Tagged ‘IC 4001’

Mosfet AC Power Inverter

I seeks a picture inverter circuit for experience build mini inverter project. Accidentally meet Simple Mosfet AC Power Inverter Circuit. Think should advantage with friends from the circuit uses integrated digital circuit number CD4001 for Pulse Oscillator Generator. Give power mosfet driver Transformer get Voltage output 110V or 220V from input 12 Volt (Battery 12V). For VR1 give for fine the frequency oscillator output. The other detail see in the circuit by have, Image source:http://cit.kmutnb.ac.th/ebook/

Related Links
AC Power Inverter
DC to AC inverters
More circuits about IC-4001
Inverter 100W 12V to 220V by Transistor Inverter 100W by IC 4047 + 2N3055 (with PCB)
Power Inverter 500 Watt 12V to 220V
By 4047+2N3055 with PCB
Inverter 12V to 220V 300W by NE555,2N3055
mini inverter 10W-30W by Transistor D313

IC 4001 NOR gate (IC digital)

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This article is about NOR in the sense of an electronic logic gate (e.g. CMOS 4001). For NOR in the purely logical sense, see Logical NOR, for other uses of similar terms, see Nor.

The NOR gate is a digital logic gate that implements logical NOR – it behaves according to the truth table to the right. A HIGH output (1) results if both the inputs to the gate are LOW (0). If one or both input is HIGH (1), a LOW output (0) results. NOR is the result of the negation of the OR operator, thus forming a complete operation the combination of which can be combined to generate any other logical function. By contrast, the OR operator is monotonic as it can only change LOW to HIGH but not vice versa.

In most, but not all, circuit implementations, the negation comes for free (e.g. CMOS) — in some logic families (e.g. TTL) it is required and OR has to be implemented as a NOR followed by an inverter. A significant exception is some forms of domino logic.

It is because of their diversity that NOR and NAND gates are used more than any other gates in the processor design. As both of these gates can be used to replicate any other gate they are produced in much higher numbers than other logic gates. This makes them cheaper to buy, which is another factor causing them to be the most popular of gates.

Related Links
More circuits by IC 4001
Nor logic gate
Circuit logic gates
Light Detector by IC CD4001
Opto-Thermo Alarm with IC 741, 4001
Touch Switch By IC 4001 & 4020
Two HiJack Alarms by 4001

Two HiJack Alarms by 4001

The first circuit was designed for the situation where a hijacker forces the driver from the vehicle. If a door is opened while the ignition is switched on – the circuit will trip. After a few minutes delay – when the thief is at a safe distance – the alarm will sound and the engine will fail.

Notes:
You’re going to trip this alarm unintentionally. When you do – the LED will light and the Buzzer will give a short beep. The length of the beep is determined by C3. Its purpose is to alert you to the need to push the reset button. When you push the button – the LED will switch-off. Its purpose is to reassure you that the alarm has in fact reset.

If the reset button is not pressed then – about 3 minutes later – both the Siren and the Buzzer will sound continuously. The length of the delay is set by R7 & C4. For extra effect – fit a second siren inside the vehicle. With enough noise going on – you may feel that it’s unnecessary to fit the engine cut-out. In which case – you can leave out D8, D9, R11, R12, R13, C6, Q3, Q4 & Ry2.

Even if you missed the early warning provided by the Buzzer – there is still time to reset the alarm before Ry2 de-energizes – and the engine fails. This additional delay – currently about 1 minute – is set by C6 and R13.

To reset the circuit you must – EITHER turn off the ignition – OR close all of the doors – before you press the reset button. While BOTH the ignition is on – AND a door remains open – the circuit will NOT reset.

The reset button carries virtually no current – so any small normally-open switch will do. Eric Vandel from Canada suggests using a reed-switch hidden behind (say) the dash – and operated by a magnet. I think this is an excellent idea. As Eric said in his email: – “… that should keep any thief guessing for a while.”

The Flow Chart is another of Eric’s suggestions. It will help you to visualize how the alarm is operated. It also explains the sequence of events that lead to siren activation – and subsequent engine failure.
Circuit :Ron J
Email Ron:
Source:: http://www.zen22142.zen.co.uk/Circuits/Alarm/hijack.htm