5VDC to 12VDC LT1070 Boost Converter Circuit

Here’s a design circuit for 5VDC to 12VDC boost converter circuit built based LT1070. This is the figure of the circuit;

The LT®1070/LT1071 are monolithic high power switching regulators. They can be operated in all standard switching configurations including buck, boost, fly back, forward, inverting and “Cuk”. A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry.

15dB UHF TV Antenna Booster Circuit

This is a circuit for antenna UHF TV that can be give 15dB preamp. This circuit is built by transistor and low components. This is the figure of the circuit.


The circuit above is formed based on BF180 UHF Transistor. The first stage is a band pass filter constructed by the C1, CV1, L1, L4, C7 and C3, the second stage is a base-common voltage amplifier with low input impedance to match. Build the L1 ~ L4 as air core coil to obtain high Q-Factor. After assembling, pack it into a proper metallic box and connect the ground of the circuit to the box to reduce noise effect.