This circuit was published in an 80's American documentation, but it is still current. The power depends on the operational. The generated signal has a sinusoidal waveform.
This stethoscope or amplifier for hearing aid using a crystal headset and microphone was found in a...
March 2017 - The new ERB-RD, ERB-RE and ERB-RG fuses from Panasonic's Micro Chip Fuses can now be...
This circuit was obtained in a 1977 technical documentation. The sensor is a thermistor from 10k...