This schematics shows an actual simple cable TV amplifier with two transistors. Transistor T1 performs the job of amplification. Up to 20dB accretion can be accepted from the circuit.T2 is active as an emitter addict to access accepted gain. This amplifier is aacceptable for cable TV systems application 75 Ohm coaxial cables and works accomplished up to 150MHz.
This schematic shows car light circuit by using 555 timer. The 555 timer used to turn on and off the light. The timer can connect the set trigger with + output from central lock open motors, and reset just connect with + output central lock close. You must put the output from alarm system.
See also Lead Acid Baterry Charger
Categories: 555 timer