Warning Flasher High Voltage Powered

TLH7969 – 4

Typical Operating Conditions

V

a

Nominal

V

a

RANGE

Flash Hz

6V

2

400 mF

1k

15k

5V – 25V

15V

2

180 mF

39k

1k

13V – 50V

100V

17

180 mF

43k

1k

85V – 200V

1W

15V Flasher

TLH7969 – 5

Note

Nominal flash rate 1 Hz

TLH7969 – 6

Estimated Battery Life

(Continuous 15V Flasher Operation)

Size Cell

Type

Standard

Alkaline

AA

3 months

6 months

C

7 months

15 months

D

13 years

26 years

Note

Estimates are made from our tests and manufacturers

data Conditions are fresh batteries and room temperature Clad

or ‘‘leak-proof’’ batteries are recommended for any application

of five months or more Nickel Cadmium cells are not recom-

mended

APPLICATIONS NOTES

Note 1

All capacitors shown are electrolytic unless marked otherwise

Note 2

Note 3

Unless noted measurements above are made with a 14V supply a 25 C ambient temperature and an LED with a forward drop of 15V to 17V at 1 mA

forward current

Note 4

Occasionally a flasher circuit will fail to oscillate due to an LED defect that may be missed because it only reduces light output 10% or so Such LEDs can

be identified by a large increase in conduction between 09V and 12V

3