We found this tube receiver in a 1950s Japanese publication. The circuit uses 5 tubes and has an RF amplifier stage for greater sensitivity. The power supply is not shown on the circuit.
This amplifier for a sinusoidal function generator uses a 741 integrated circuit. The circuit is...
In the figure we have the way to control a TIC series triac with a reed switch. The current in the...
This source was found in the National Semiconductor's Linear Applications Handbook of 1994....