CN2096164U

CN2096164U - Electronic timed alarm

Info

Publication number: CN2096164U
Application number: CN 91216524
Authority: CN
Inventors: 葛向东
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-06-24
Filing date: 1991-06-24
Publication date: 1992-02-12

Abstract

The utility model discloses an electronic timing reminder, which is composed of a minimum time signal generating circuit 1, a binary counting multibit output circuit 2, a modulating and oscillating circuit 3, an audio oscillation circuit 4, and a current amplifying and acoustic-optic generating circuit 5. The utility model is characterized in that the minimum time signal generating circuit 1 can generate stable minimum multibit time signals in a high and a low positions, the binary counting multibit output circuit 2 counts accumulatively, a multi-position switch (K2) selects the time signal for timing, and the time signal is then converted into an audible and visible signal by a follow-up circuit, so that the purpose of timely reminding is achieved. The utility model has the advantages of small size, accurate and stable timing, and multiple positions.

Description

Electronic timed alarm

The utility model is a kind ofly can regularly constantly send the electronic timing reminiscences that acousto-optic is used for reminds people work, studying and living.

Existing electronic timer mainly comprises timing signal generation part harmony light signal generation part.But part takes place timing signal generally is divided into mechanical type, and as a Chinese patent application " the multi-functional timer of music (notification number GG85204569) " of bulletin on October 1st, 1986, its weak point is that volume is big, and precision is low." the domestic electronic fixed time call device " by name of another kind of as CN88201525U bulletin, part takes place its timing signal is to adopt simple RC delay circuit, influences greatly because of timing signal is subjected to resistance value and capacitance destabilizing factor, regularly gear lacks difficulty and becomes product.

Task of the present utility model provides a kind of timing accuracy height, regularly select that gear is many, volume is little, produce and electronic timing reminiscences that use is all more convenient.

The utility model electronic timing reminiscences mainly by timing signal part takes place and conventional modulation oscillator circuit, audio oscillator circuit, electric current amplifies and acousto-optic generation circuit is composed in series.Wherein timing signal takes place partly to be made of minimum time signal generating circuit and the series connection of binary counting multidigit output circuit.The minimum time signal generating circuit is made of not gate and time delay resistance, the delay capacitor of two series connection, and time delay resistance is connected across the two ends of previous not gate, and delay capacitor is connected across on the front-end and back-end of not gate of two series connection.The minimum time signal is decided by the debugging time delay resistance during production; Binary counting multidigit output circuit, switch constitutes when being selected by binary counting multidigit output integrated circuit and multidigit.The output of the input termination minimum time signal generating circuit of this integrated circuit, the movable end of switch when the multidigit output termination multidigit of this integrated circuit is selected, the follow-up modulation oscillator circuit of fixedly termination of switch when multidigit is selected.

The utility model has the advantages that the just easy calibration of energy when its timing signal takes place part by production, and steady in a long-term.Regularly select gear many, switch is set in the time of can selecting by multidigit, and is easy to use, volume is little, precision is high.

Increase regularly gear in order to advance one one, the time delay resistance in the above-mentioned minimum time signal generating circuit can be made of variable resistor and three diverter switches of two series connection.Variable-resistance fixing output of the previous not gate of termination wherein, the last stiff end of the variable-resistance stiff end of another stiff end of this resistance and movable end thereof and another, diverter switch joins.The following stiff end of variable-resistance another stiff end of another and movable end and diverter switch joins.Stiff end in the middle of the switch is idle.The variable resistor of two series connection communicates by the lever arm of switch and the output of previous not gate.Can obtain high and low two grades of multidigit minimum time signals by three diverter switches.

Accompanying drawing one is the utility model circuit theory diagrams;

Accompanying drawing two is the utility model front appearance schematic diagram.

Following adjoint is done further embodiment explanation:

The utility model is by minimum time signal generating circuit 1 and binary counting multidigit output circuit 2 and conventional modulation oscillator circuit 3, audio oscillator circuit 4, electric current amplifies and acousto-optic generation circuit 5 is composed in series.Wherein: minimum time signal generating circuit 1 is by two not gate M ₁, M ₂, two variable resistor R ₁, R ₂, a delay capacitor C ₁, one not only made the bipolar three-position switch K that the thickness shelves switch but also do power supply E switch ₁Constitute.Here not gate M ₁With not gate M ₂Series connection.Capacitor C ₁Be connected across not gate M ₁Input and not gate M ₂Output on.Variable resistor R ₁With R ₂Series connection is by bipolar three-position switch K ₁Can make R ₁Variable resistance (low grade) or with R ₁+ R ₂Variable resistance (top grade) be connected across not gate M ₁Two ends on; Binary counting multidigit output circuit 2 goes out integrated circuit (IC) by binary counting ten four figures ₂And additional capacitor C ₂, resistance R ₃K switch when selecting with eight of one poles ₂Constitute.Integrated circuit (IC) ₂Input meets above-mentioned not gate M ₂Output, K switch ₂Movable end choosing meet IC ₂Back eight outputs; Modulation oscillator circuit 3 by with gate diode D ₁With not gate M ₃, M ₄, time delay resistance R ₄, C ₃Constitute.Diode D ₁With not gate M ₃, M ₄Series connection, resistance R ₄Be parallel to not gate M ₃Two ends, capacitor C ₃Be parallel to not gate M ₃And M ₄ Audio oscillator circuit 4 by with gate diode D ₂, not gate M ₅, M ₆, time delay resistance R ₅, delay capacitor C ₄Constitute.Its form of the composition is with modulation oscillator circuit 3; Electric current amplification and acousto-optic generation circuit 5 are by current-limiting resistance R ₆, R ₇, triode T ₁, news Chinese percussion instrument SP, light-emitting diode D ₃Constitute.Current-limiting resistance R ₆The output of an ending connecting audio oscillating circuit 4, another termination triode T ₁Base stage, triode T ₁Grounded emitter, collector electrode also meets news Chinese percussion instrument SP and serial connection current-limiting resistance R ₇Light-emitting diode D ₃Not gate M in the circuit ₁～M ₆Concentrate and adopt one six ungated integrated circuit IC ₁K switch ₂At IC ₂The timing of setting on the output is:

Tn=t ₁* 2 ⁿ/ 60(branch) or Tn=t ₂* 2 ⁿ/ 60(second)

In the formula, t ₁For passing through debugging variable resistor R ₁At the low-grade minimum time of minimum time signal generating circuit 1 output; t ₂For passing through debugging variable resistor R ₁+ R ₂High-grade minimum time in 1 output of minimum time signal generating circuit; N=6,7,8 ... 13, the corresponding IC of difference ₂14 output n ₆, n ₇, n ₈N ₁₃As the K that closes a switch _1-1, K _1-2After top grade or low grade, power supply E connects simultaneously.Minimum time signal generating circuit 1 is stablized output one high-grade or low-grade minimum time signal (cycle of oscillation) with regard to starting of oscillation.After the input of binary counting multidigit output circuit 2 is received signal, promptly begin counting, when reaching one pole eight bit switch K ₂During prior selected output shelves (time) such as n ₆, can obtain accumulative total is the time signal (high potential) of 2.5 minutes (low grade) or 3.75 minutes (top grade).This signal makes 3 starting of oscillations of follow-up modulation oscillator circuit, and impels audio oscillator circuit 4 starting of oscillation output audio signals, follow-up electric current is amplified and 5 work of acousto-optic generation circuit, and sound and flash of light take place.Play the effect of in time people being reminded.

Claims

1, a kind of electronic timing reminiscences, by timing signal part and modulation oscillator circuit (3) take place mainly, audio oscillator circuit (4), electric current amplifies and acousto-optic generation circuit (5) is formed, modulation oscillator circuit (3) and audio oscillator circuit (4) carry out frequency modulation(FM) and are converted into audio signal according to the signal that preceding continuous timing signal generating unit branch sends, amplify by follow-up electric current then and acousto-optic generation circuit (5) amplifies audio signal and sends the acousto-optic alerting signal, feature of the present utility model is that described timing signal part takes place by minimum time signal generating circuit (1) and binary counting multidigit output circuit (2) series connection formation, wherein:

Minimum time signal generating circuit (1) is by two not gate M ₁, M ₂With time delay resistance R, delay capacitor C ₁Constitute not gate M ₁With not gate M ₂Series connection, resistance R is connected across not gate M ₁Two ends, capacitor C ₁Be connected across not gate M ₁Input and not gate M ₂Output on;

Binary counting multidigit output circuit is by binary counting multidigit output integrated circuit (IC) ₂K switch when selecting with multidigit ₂Constitute integrated circuit (IC) ₂The input termination before continuous not gate M ₂Output, K switch ₂Movable end choosing meet IC ₂The multidigit output, K ₂The follow-up modulation oscillator circuit (3) of fixedly termination.

2, electronic timing reminiscences according to claim 1 is characterized in that time delay resistance R in the said minimum time signal generating circuit (1) is by the variable resistor R of two series connection ₁And R ₂And three diverter switch K ₁Constitute resistance R ₁A fixing termination not gate M ₁Output, another stiff end and movable end thereof and resistance R ₂A stiff end, K switch ₁Last stiff end join resistance R ₂Another stiff end and movable end and K switch ₁Following stiff end join K switch ₁The center fixed end is idle, series resistance R ₁, R ₂Pass through K switch ₁Lever arm and not gate M ₁Input communicate.