Circuit arrangement for operating a lamp

DETAILED DESCRIPTION In a circuit arrangement for operating a lamp, an impulse generator for generating series of impulses having a frequency of more than 10 Hz is provided and is connected, by coupling means, to a voltage source and to the lamp for operating the lamp with the series of pulses so as to generate bright light pulses.
Preferably, the impulse frequency is at least 16 Hz.
In this way, the time-dependent resolution capability of the eye is utilized which is at close to 16 Hz or about at 16 Hz.
Starting with a frequency of 10 Hz, the illumination can be considered essentially complete so that it appears to a human viewer as a timely uniform illumination.
With the preferred 16 Hz or at a higher frequency, the timed lighting strokes appear to the human as light generated by a continuous light source.
The voltages used herein are preferably low, specifically .
ltoreq.
24 V.
Preferably, 1 to 4 primary cells are used in series so that a voltage of 1.
5 to 6 V is obtained.
The coupling means are for example soldered wires or plug-in contacts.
Preferably, the series of impulses generated by the first pulse generator include an impulse period (HIGH-Phase) and a time period without impulse (LOW Phase), which is at least as long as the impulse period.
In this way, already at least half of the energy is saved.
If the ratio of time period without impulse (LOW Phase) to the time period with impulse (HIGH Phase) is .
gtoreq.
2 and preferably .
gtoreq.
10 or even .
gtoreq.
100 and even .
gtoreq.
1000, the energy consumption is further reduced.
In this connection, it is pointed out that, during the time of the impulse, the lamp must generate essentially the full light output in order to avoid the impression that in fact less light is generated.
If, as it is preferred, a switch is provided which is arranged in series with the first impulse generator and/or a second impulse generator and which switches a voltage which can be applied to the means for coupling the lamp, the power supply to the lamp can be easily controlled and, in addition, an impulse series with clearly defined ramps can be provided