lm555 lm555c timer Circuits
Posts tagged Timers for Timing Delays
Circuit diagram LM1881 video sync for tv and lcd monitor separator, a 74HC4066 as a simple analog switch
The chips include an ATmega88 as the main controller, an AD9280 ADC, an LM6134 high-speed quad op-amp, an LM1881 video sync separator, a 74HC4066 as a simple analog switch, and an RS-232-level converter. LM1881 Video sync separator extracts timing information including composite and vertical sync, burst/back porch timing, and odd/even field information from standard negative […]
consumer goods why arnt they repairable?
steve50 asked: many years ago as a tv man i could repair many tv’s in customers houses there were known brands and real wood cabinets some even came with circuit diagrams in the box. now they are all made in foreign lands no circuits and if a main part has gone its scrap time even […]
The basic medium wave circuit
The basic medium wave circuit Transmissions on Medium Wave frequencies are by Amplitude Modulation. …. On this basis, if used in our receiver circuit
hspd 12 piv circuit using 2N3439
hspd 12 piv circuit using 2N3439 hspd 12 piv circuit using 2N3439 R1 …………. 33K ohm R2 …………. 100 ohm VR …………. 1K ohm c1 …………. 50uF – 450V TR1 ………… 2N3439 TR2 ………… 2N3439 T1 Transformer Pri: 110 – 220V Sec: 0 – 220V 5mA
