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What else can I help you with?
What are the four steps for correctly soldering components to a printed circuit board?
1. Remove the soldering iron from the holder and wipe the tip on a sponge. 2. Heat the joint to be soldered. 3. Apply solder to the joint. 4. Apply a small bit of solder to the tip of the soldering iron and return it to the holder.
What is Stability factor of circuit?
A: A circuit to be useful to do work must be stable with the environment and also with reliable circuit performance. A circuit that is allow break into oscillation or other criteria is not stable therefore not much useful.
What must you know before you change a circuit breaker?
Before you change a circuit breaker it has to be established that the breaker is at fault and not some other part of the circuit.
What must be changed for circuit to work?
You must correct what is wrong with it before it will work.
What percentage of the total current in a transistor flows through the collector?
The total current in a transistor is the emitter current, which is the sum of the collector current and the base current. The ratio of collector current over base current, in linear mode, is beta-DC, or hFe. However, in order for linear mode to be true, the ratings of the transistor must not be exceeded, and the collector current must not be limited by the circuit. Note also that hFe is temperature dependent, and is expressed in the data sheet as a minimum, not an absolute value - it can vary from transistor to transistor.
What must be disconnected from a circuit under test before connecting the ohm meter to the circuit?
The power source must be disconnected from the circuit under test before connecting an ohm meter to prevent potential damage to the meter or the circuit. This ensures that there are no active voltages present while taking resistance measurements.
Can you substitute a silicon transistor in place of germanium?
It can be done if absolutely necessary, but usually the circuit will not function properly unless totally redesigned to compensate for the differences between the components. This is rarely worth the trouble unless a germanium substitute is not available and the circuit MUST be repaired at any cost.So unless you know exactly what you are doing and how to design transistor circuitry from scratch (after reverse engineering the old circuit), consider such substitutions to be impossible.
What is NPNbiasing of a transistor?
An NPN transistor must be biased with a positive voltage in order to "turn on". A silicon transistor must have at least .07 volts on its base to start current flow from the collector to the emitter of the transistor. Some transistors have different biasing voltages. Like a germanium transistor will "turn on" at .02 volts.
Can you bring a soldering iron on a plane?
No, you cannot bring a soldering iron on a plane in your carry-on luggage. It must be packed in your checked baggage.
What must you always do before taking apart a circuit?
Turn off the power!
What are the biasing roles of transistor?
A: Transistor to be effective as an linear amplifier it must be operated in its linear load range. The biasing scheme is to insure that the transistor is put in its linear/load range
For normal operation of an npn transistor the base must be ground true or false?
False. For normal operation, an NPN transistor will have the base be more positive than the emitter and less positive than the collector, with the collector more positive than the emitter. Whether the base is grounded or not depends on the chosen design configuration of the circuit.
