We found this circuit in the March 1992 Radio Electronics magazine. The circuit provides 100 Hz for each degree Celsius or Fahrenheit.
The transistors of this amplifier for 8-200 headphones may be the BC548 or equivalent to replace...
TDK's TAS Series Magnetic Angle Sensors can be obtained from Mouser Electronics. The components...
This circuit flashes a neon lamp from a low voltage source of 6 to 15 V. The transformer is low...