This amplifier with the LM1098 and LM101 by Motorola from a 1990 manual can be designed with more modern operations. The bandpass for small signals is 3.5 MHz and the power range is 250 kHz.
This circuit is from a Popular Electronics from April 1991. The magazine no longer exists, but the...
This two-color LED indicator was found in a Popular Electronics from the 90's. The transistor...
This circuit causes an LED to flash at a frequency determined by the capacitor. The circuit has an...