Electronic clock hourly timing negative ion generator

Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22

Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM

GW MB10F 0.8A 1000V rectifier bridge

The dotted line in the figure is the component of the electronic clock 903B, and its core is the time-synchronous integrated circuit IC1 (KS5194 or KS5195). S and D are the function conversion end and the adjustment end respectively, and two external control switches are connected, XT is the crystal oscillator of the main oscillation circuit, and HTD is the piezoelectric ceramic piece used for the timekeeping. The 903B uses a 1.5V battery. Every time it reaches the hour, the Ao end of IC1 will send a high-level pulse with a peak-to-peak value of 1.3V and a width of 0.5s.