This small power supply provides a regulated voltage, adjustable between 1.5V – 35V at 1 ampere. This circuit is built based on IC LM317. This circuit is ready to use, you just need to add a suitable transformer. This circuit is thermal overload protected because the current limiter and thermal overload protection are included in […]
The purpose of this 1.5V FM broadcast transmitter circuit is to provide a simple, appliance-like low-power transmitter to rebroadcast audio. It can be used to rebroadcast the output of a CD player, television receiver, or radio receiver. This transmitter does not have pre-emphesies, so it is not high-fidelity. It has sort of an “AM” sound […]
If you want enjoy and share your favorite music, you can connect your iPod, MP3 or CD player to some kind of FM transmitter. The transmitting signal then can be picked up by any FM radio receiver, most often used in cars. The problem with most FM transmitter is that they have very weak signal […]
The infinity bug is connected across the phone-line of a distant phone in parallel mode. It uses surface-mount resistors, capacitors, transistors and diodes. It gets operating current from the phone line (leech device), no external power supply is required.
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