These are four 1.5V FM transmitter circuit (low volt) which use transistor and a few parts, without PCB but easy to build for output 88-108MHz or 90-100MHz, more circuits below […] Read more
See idea: Voltage to frequency converter circuit use CA3130 OP-Amp, that linearity Of changing up to 0.5% and Temperature coefficient. Read more
ECG simulator circuit is very useful in the medical community. Such as experimental research – development of bio-medical image, using Digital IC as main [….] Read more
This is Simple VCO circuit using schmitt trigger using 74HC14__Hex inverting, which inside have 6 schmitt trigger, but applied one frequency controller Read more
The simple sine wave generator circuit that out of 30MHz,15MHz as main components is IC-number NE602, Double Balance Mixer IC to make as sine wave circuit. Read more