CN2053791U - Timed power supply - Google Patents

Abstract

The utility model provides a multipurpose timed regulated power supply which can output regulated alternate current power supply and regulated direct current power supply, comprising a startup, an alternate current output, a voltage reduction and rectification, a time control, a time adjustment and a direct current output. The utility model is suitable for the time control of domestic appliances.

Description

Timed power supply

The utility model relates to D.C. regulated power supply, particularly relates to D.C. regulated power supply regularly.

Existing D.C. regulated power supply can not provide timing device, and existing timer can not provide D.C. regulated power supply again, and this use for household electrical appliance has brought great inconvenience.

The purpose of this utility model, exactly in order to address the above problem, and the multipurpose of design stabilized voltage power supply regularly.But timing controlled exchanges, DC power supply, makes household electrical appliance such as lamp, recorder, electric blanket etc., can close voluntarily giving the fixed time (0～60 minute), thereby has saved the energy, has guaranteed safety, and circuit simply, reliably, very easily promote.

Accompanying drawing is depicted as circuit theory diagrams of the present utility model, below in conjunction with accompanying drawing the utility model is further described.

The utility model is by microswitch K₁, turn round sub-K switch₂, AC load socket R_L, step-down transformer B, sensitive relay J₁、J ₂, commutation diode D₁－D ₄, filter capacitor C₁、C ₃, resistance R₁、R ₂、R ₃, charging capacitor C₂, light emitting diode D₅, unijunction transistor BG₁, three terminal regulator WY, potentiometer W₁, the compositions such as direct current accessory power outlet Z. Be divided into startup, interchange output, step-down rectifier, timing controlled, timing adjustment, DC voltage-stabilizing are exported six parts. Details are as follows for circuit: microswitch K₁With J_1－1The normally opened contact parallel connection is connected in the power transformer B primary return rectifier cell D₁－D ₄With filter capacitor C₁Be connected in the secondary loop of power transformer B, automatically the R in the holding circuit₁、 D ₅、J ₁, be connected in after the serial connection low pressure in DC circuit in C₁Parallel connection, time control components R₂、BG ₁、J ₂Serial connection, R₃、W ₁、C ₂The serial connection after parallel connection again with turn round sub-K switch₂Be parallel in the low-voltage dc circuit DC voltage-stabilizing output circuit element WY, C after the serial connection₃, Z and C₁In parallel. Be connected in the low-voltage dc circuit. As timing adjustment, DC voltage-stabilizing output, interchange output, step-down rectifier are prior arts, are not described here, highlight below control section regularly: sensitive relay J₁With light emitting diode D₅, resistance R₁Be connected in series in the low-voltage dc circuit sensitive relay J₂Normally opened contact J_2－1With J₁In parallel. In circuit, work as like this J_2－1When closed, J₁On electric current through J_2－1Bypass, J₁Lose its normally opened contact J of voltage_1－1Open whole power cut-off.

During use, touch startup knob K ₁, the B energising is in the secondary output AC low pressure of B, through D ₁-D ₄Rectification, C ₁Filtering, voltage passes through R ₁, D ₅Be added in J ₁On, this moment D ₅Bright, represent this machine work, J ₁Charged and adhesive, J _1-1Closure, civil power is through J _1-1Form loop, J by transformer ₁Self-sustaining.Another of low-voltage DC partly by behind the WY again through C ₃Stable DC 5V voltage is exported in filtering on accessory power outlet Z, work as K ₂When closed, regularly part is promptly started working, and low-voltage DC is through R ₃, W ₁Be added in charging capacitor C ₂On, to certain hour C ₂Current potential raises, BG ₁Conducting, J ₂Adhesive, J _2-1Closure, J ₁Dead electricity discharges, J _1-1Disconnect, complete machine outage this moment, the timing controlled process finishes.Continue regularly can touch K once more as need ₁, as with K ₂Push the position of " opening ", just can provide alternating current 220V voltage and low pressure stable direct current 6V voltage for a long time.

Claims (1)

1. The timing device of a kind of exportable interchange, DC voltage-stabilizing electric current, it is exported 6 parts and is formed by startup, interchange output, step-down rectifier, timing controlled, timing adjustment, direct current, sensitive switch K1 is in parallel with the J1-1 normally opened contact, be connected in the power transformer B primary return, rectifier cell D1-D4 and filter capacitor C1 are connected in the secondary loop of electric current transformation B, time control element resistance R ₂, unijunction transistor BG1, sensitive relay J ₂Coil tandem, resistance R 3, potentiometer W1, charging capacitor C ₂The parallel connection of serial connection back again with turn round sub-K switch ₂Be parallel in the low-voltage dc circuit after the serial connection, three terminal regulator WY, filter capacitor C3, direct current accessory power outlet Z are in parallel with C1, be connected in the low-voltage dc circuit, timing controlled partly is characterized in that: timing controlled element sensitive relay J1 coil and light-emitting diode D5, resistance R 1 are connected in series in the low-voltage dc circuit, sensitive relay J ₂Normally opened contact J _2-1With the J1 coils from parallel connection of coils.