Dual flashing string circuit (3)

It is a dual-channel flashing light string controller made by cleverly using a piece of HF ('9561H tongue effect integrated circuit
). J1FC9 5 61B (produced by Zhizhou Bianhua iLl Yan Co., Ltd.) is called the four-sound alarm integrated circuit . It uses
Black paste soft packaging is to use epoxy resin to encapsulate the circuit core H on a small printed circuit board. - The two sound selection terminals
SE I.l, SI/I.2 have high and low levels at the same time, and can be connected to pin b Get q different alarm sounds. When the SEI_1 and
SE I.? terminals are both suspended, the circuit outputs the police car iu ke7 sound. At the same time, the small L terminal output sinks current
to drive the two light-emitting diodes to flash. This circuit uses the functions of terminals j~7 to drive
the built-in light-emitting diodes of solid state relays SSR] and SSR2, so that the gap between SSR1 and SSR2 is opened and closed to
achieve control F], The purpose of the two colored lights of E2 is to shine. The b pin of TF1 terminal of III is left unused. R. is an
external
oscillation resistor of HFC9561H.
Changing its resistance value
can not only change
the tone of the output sound effect, but also electrically
affect L :, /,, the terminal outputs the
flashing frequency of the current sink
, so
the flashing effect of the light string can be adjusted.
    SSR1 and SSR2
can use the T/1C081 type I type gay relay produced by Guangdong Zhong...
Dahua Electric Factory, and its load The power is 220V, 1A. (1. It is
required to use CI~-100V polypropylene capacitors, other components rr parameter map, no special requirements.