CN201417301Y - Dry battery power indicator - Google Patents

Abstract

The utility model discloses a dry battery power indicator, in particular to a dry battery power indicator with sound prompts. The utility model provides a dry battery electric quantity prompting instrument which can sound an alarm when the dry battery is close to being out of power. It includes a dry battery and a power consumption circuit connected in series with the dry battery. A series circuit consisting of closed switches. It can remind you in time when the dry battery is low, which saves a lot of trouble.

Description

Dry cell capacity prompt instrument

Technical field

The utility model relates to a kind of dry cell capacity prompt instrument, particularly a kind of dry cell capacity prompt instrument that has auditory tone cues.

Background technology

At present, in life, many times can run into because dead battery, but not have discovery in time and the inconvenience that causes, also cause a lot of troubles simultaneously.

Summary of the invention

For solving above technical deficiency, the utility model provides a kind of dry cell capacity prompt instrument that can sound and report to the police when not having electricity at dry cell.

The utility model is realized by following measure:

A kind of dry cell capacity prompt instrument of the present utility model, comprise dry cell and the power circuit of connecting with dry cell, it is characterized in that: the coil that is in series with relay in the described power circuit, and the power circuit two ends also are parallel with cue circuit, and described cue circuit is the series circuit of being made up of the normally closed switch of loudspeaker and relay.

The beneficial effects of the utility model are: can in time remind when the dry cell electric weight is not enough, save a lot of troubles.

Description of drawings

Fig. 1 is a circuit connection diagram of the present utility model.

Among the figure: 1 dry cell, 2 power circuits, 3 relays, 4 loudspeaker.

Embodiment

Of the present utility model a kind of dry cell capacity prompt instrument as shown in Figure 1, comprise dry cell 1 and the power circuit of connecting with dry cell, it is characterized in that: the coil that is in series with relay 3 in the described power circuit 2, and the power circuit two ends also are parallel with cue circuit, and described cue circuit is the series circuit of being made up of the normally closed switch of loudspeaker 4 and relay 3.

When dry cell 1 electric weight is sufficient, the coil of its relay 3 gets, this is that the normally closed switch of relay 3 is opened cue circuit that this moment, dry cell 1 linked to each other for opening circuit, and just loudspeaker 4 must not electricity, loudspeaker 4 sound also just can not occur, when the electric weight of dry cell 1 is not enough, the coil of relay 3 obtains faint electric weight, the normally closed switch closure of relay 3, because loudspeaker 4 adopt low consumption voltage loudspeaker, very low voltage also can sound, and plays the effect of warning.

Claims (1)

1. A dry battery quantity indicator, comprising a dry battery (1) and a power consumption circuit (2) connected in series with the dry battery, characterized in that: a coil of a relay (3) is connected in series in the power consumption circuit (2), and the A prompting circuit is also connected in parallel at both ends of the electric circuit, and the prompting circuit is a series circuit composed of a horn (4) and a normally closed switch of a relay (3).

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